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: Jacob and Benny are squatting at the gym. Jacob has thin frail legs and Benny has big strong legs. Question: Who squats less weight? (A) Jacob (B) Benny
Example output: Jacob
Example explanation: Typically, people with thin frail legs squat less weight than people with big strong legs, so the answer is Jacob.
Q: 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
A:
ROUGH LEATHER