instruction:
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).
question:
Sentence: John and Rita are going for a run. Rita gets tired and takes a break on the park bench. Question: After twenty minutes in the park, who has run farther? (A) John (B) Rita
answer:
Rita

question:
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
answer:
Mary

question:
Sentence: Tom has recently gotten a prosthetic arm and he notices that it is somewhat stronger than his human arm. Tom tosses a tennis ball to his friend, first with the human arm then with the prosthetic arm. Question: Which arm will toss the ball a shorter distance? (A) Tom's prosthetic arm (B) Tom's human arm
answer:
Tom's prosthetic arm