You are given a sentence, a question and two answer options ('A' and 'B'). Your task is to find the correct option for the given question. Write down the answer index: 'A' or 'B'.

Example Input: Sentence: Ana and Ela are twins who are equally physically fit. Ana runs around a track twice as many times as Ela. Question: Who will have a lower amount of sweat on their body? (A) Ana (B) Ela
Example Output: B

Example Input: Sentence: Graviton is twice as massive as Thanos. Question: Which will exert more of a pull on atoms? (A) Graviton (B) Thanos
Example Output: A

Example Input: Sentence: When Nick put the chicken thighs into the freezer bag, he could bend them almost in half and they bounced back into position. When he pulled them out and tried bending one, it broke. Question: Why? (A) a frozen chicken thigh is less flexible (B) a fresh chicken thigh is more flexible
Example Output:
B