Detailed Instructions: You are given a sentence, a question and two answer options ('A' and 'B'). Your task is to find the **incorrect** answer (return the string of the incorrect option, not A/B).
Problem:Sentence: Mary and Billy are at the beach skipping rocks.  Billy works out everyday, but Mary is weaker. Question: Who can throw the rocks farther? (A) Mary (B) Billy
Solution:
Mary