You are given a sentence, a question and two answer options ('A' and 'B'). Your task is to find the correct answer (return the string of the correct option, not 'A' or 'B') for the given question.

Example Input: Sentence: Suppose you see an Elephant at the zoo and look up into the night sky right after. Question: Which object looks bigger? (A) Elephant (B) Moon
Example Output: Elephant

Example Input: Sentence: Mike's belt is more flexible then his book. Question: Which item is less likely to break when he bends it? (A) belt (B) book
Example Output: belt

Example Input: Sentence: To save money, the contractor stopped buying the costlier wall supports he was required to use and started using some cheaper ones instead. As a result, several roofs collapsed. Question: Which wall supports were thinner? (A) The expensive wall supports were thinner (B) The cheaper wall supports were thinner
Example Output:

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
The cheaper wall supports were thinner

