Q: In this task, you are given a question containing a blank (_) and two options. You should pick the best option to answer the question. Please answer with "A" or "B".
The infection that Emily has it is more serious than the one Lindsey has, because _ infection is due to the Ebola virus. (A) Emily (B) Lindsey
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