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).

[EX Q]: Sentence: An astronomer was studying the properties of some stars. She saw that one was a neutron star that was so densely packed with material that it had a far larger mass than an ordinary star that she was also observing. Question: Which of these stars would she expect to have a greater gravitational force? (A) neutron star (B) ordinary star
[EX A]: ordinary star

[EX Q]: Sentence: Laura and Sean are running on the tracks. Sean needs to stop running half way through and walk the rest. Question: Who ends one round around the track the fastest? (A) Laura (B) Sean
[EX A]: Sean

[EX Q]: Sentence: Matt knows that cakes are smoother than pies. Question: Which dish can he push his spatula deeper into? (A) cake (B) pie
[EX A]:
pie