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).

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

A: ordinary star
****
Q: Sentence: A grocery bag experiences more resistance sliding across a store floor then across a house floor. Question: Which floor will force the grocery bag to move slower across it? (A) house floor (B) store floor

A: house floor
****
Q: Sentence: A rocket is much faster then an airplane. Question: If both fly for the same amount of time, which will fly the greater distance? (A) rocket (B) airplane

A:
airplane
****