You are given a sentence, a question and two answer options. Your task is to write down the index ('A' or 'B') of the **incorrect** option 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: B
Example explanation: Typically, people with thin frail legs squat less weight than people with big strong legs, so the incorrect answer is Benny.
Q: Sentence: Janet is rolling marbles down a marble counter. Two marbles are rolled together; one blue, one yellow. The blue marble goes further. Question: Which marble traveled longer? (A) blue marble (B) yellow marble
A:
B