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).

Sentence: Abigail is very thin, and her friend Megan is muscular and broad. Both are trying to move a heavy box. Question: Which will move it first? (A) Abigail (B) Megan
Abigail

Sentence: Polyethylene is more flexible then pvc. Question: Which plastic is the more breakable of the two? (A) polyethylene (B) pvc
polyethylene

Sentence: A boy slid in the mud, after walking across the grass yard with no problem. Question: Which had more resistance? (A) mud (B) grass

mud