In this task, you are given two facts, and a multiple-choice question. Based on the given facts, answer the question with index of the correct option (e.g, "A").
One example is below.
Q: Fact1: a plant requires sunlight to grow, Fact2: Plants to avoid are fast-growing vines that can take over an area in no time., Question: What requires sunlight in order to take over an area? (A) spores (B) fish (C) plants (D) humans (E) pods (F) Oak (G) opossums (H) coral
A: C
Rationale: This is a good example. Based on the facts plants require sunlight in order to take over an area.
Q: Fact1: Bile reduces the acidity of food entering from the highly acidic stomach., Fact2: After a meal, the gallbladder releases the bile through a passageway called the bile duct., Question: What is one function of the gallbladder? (A) procreation (B) help balance a body (C) holding nutrients (D) keep spine straight (E) last stage before adulthood (F) keep skin moisturized (G) tubular organ (H) reduce acidity of food
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
H