You are given a sentence, a question and two answer options. Your task is to write down the index ('A' or 'B') of the **incorrect** option for the given question.

Ex Input:
Sentence: It's easy to stab a pin into a pin cushion, but it's hard to stab one into a pillow. Question: Which surface will make the pin get hotter when stabbing into it? (A) pin cushion (B) pillow

Ex Output:
A

Ex Input:
Sentence: Saturn has greater mass than the Moon of Earth. Question: On which one would you experience stronger gravity? (A) Saturn (B) the Moon

Ex Output:
B

Ex Input:
Sentence: Kelly is standing on the planet Mercury. Allison is on Pluto. Each girl is looking up into the sun. Question: Which girl has a brighter view of the sun? (A) Allison (B) Kelly

Ex Output:
A