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'.

Ex Input:
Sentence: The planet Earth has more mass then the plant Venus. Question: Which plant has stronger gravity emitting from it? (A) Earth (B) Venus

Ex Output:
A


Ex Input:
Sentence: A cutting board is put over a metal sink. Sarah cuts some vegetables on the cutting board. The cutting board slides around. She moves the cutting board onto a wet dish rag on the counter. Then she cuts more vegetables. The cutting board doesn't slide around. Question: Which one of these sticks to the cutting board more safely? (A) metal sink top (B) wet dish rag

Ex Output:
B


Ex Input:
Sentence: Karl is trying to light a match on his pant legs with very little success. He finds a piece of rough leather to strike the match against and the match lights up in no time. Question: Which surface provides more friction for heat? (A) PANT LEG (B) ROUGH LEATHER

Ex Output:

B