In this task, you will be presented with a passage and have to answer a question based on your understanding of the events inferred from the passage. Among the entities, try to find the best entity that is most likely to fill in "_" and classify the answers based on options.

Example input: For four years we have waited expectantly for the pitter patter of tiny paws. Soon, that wait could finally be over. Tian Tian, the UK's only female giant panda, has conceived and could give birth to a cub as early as August. However Edinburgh Zoo, where the pandas live, have warned people 'not to get too excited' as the process is 'extremely complex'. Moreover, on the two previous occasions keepers inseminated Tian Tian - whose name means 'Sweetie' - she has failed to produce a panda cub. She was artificially inseminated again in March this year, but keepers at the zoo say implantation - when a fertilised egg attaches to the uterus - has not yet occurred.Tian Tian has conceived and could give birth to a cub as early as AugustShe has been inseminated twice before but so far failed to produce a cubTian Tian and Yang Guang arrived in 2011 from China to great fanfareOn loan at £600k a year, became first giant pandas to live in UK for 17 years 
 Questions:Under the terms of the agreement any cubs will return to _ at the age of two, the age at which they would normally leave their mother in the wild. (A) Tian Tian (B) UK (C) Edinburgh Zoo (D) Sweetie (E) Yang Guang (F) China
Example output: (F)
Example explanation: This is a good example. Based on the passage, any cubs will return to China at the age of two
Q: Fifty years ago, smoking was linked to cancer in the first surgeon general's report on tobacco. On Friday, Dr. Boris Lushniak, the acting surgeon general, issued the 32nd report on tobacco, saying "enough is enough." His goal: eliminating the use of cigarettes and tobacco. In 1964, when Dr. Luther Terry released the first surgeon general's report, the public learned smoking causes lung cancer. At the time, 42% of American adults smoked, Lushniak says. Since then, "Tobacco has killed more than 20 million people prematurely," says Dr. Thomas Frieden, director of the Centers for Disease Control and Prevention, in the forward to the new report.The new surgeon general's report links 13 cancers to smokingExposure to secondhand smoke causes stroke, the new report saysSome 5.6 million children today will die prematurely if things don't change, report saysActing Surgeon General Boris Lushniak says he wants a smoke-free generation 
 Questions:"It is my sincere hope that 50 years from now we won't need another (surgeon general's) report on smoking and health, because tobacco-related disease and death will be a thing of the past," _ writes in the report. (A) Boris Lushniak (B) Luther Terry (C) American (D) Thomas Frieden (E) Centers for Disease Control and Prevention
A:

Show your work and conclude with the exact phrasing "Therefore, the final answer is [answer]." where [answer] is just the final number or expression that solves the problem.
user
(A)