instruction:
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.
question:
Sentence: The Moon is less massive than the Earth. Question: On which would the gravity be lower? (A) Moon (B) Earth
answer:
B

question:
Sentence: The first little pig built his house of thin straw. The second little pig built his house of thick wood. Question: Whose house would be stronger when the big bad wolf arrived? (A) first little pig (B) second little pig
answer:
A

question:
Sentence: Joe and Mike are walking down the same street at the same pace. Question: If Mike walks for one more hour than Joe, who travelled further? (A) Joe (B) Mike.
answer:
A