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.

Example Input: Sentence: An average car weighs around 3 thousand pounds. Question: What would have a greater gravitational pull the Moon or a Car? (A) Moon (B) Car
Example Output: B

Example Input: Sentence: Jim ran over a nail on his bicycle and got a flat tire. David ran over the same nail in his car and his tire didn't get flat. Question: Why did Jim get a flat tire but David did not? (A) Jim weights more than David (B) Jim's tire was thinner
Example Output: A

Example Input: Sentence: A man punches a tire and a wood board for a demonstration. The board if very stiff. Question: Which object do you think is more likely to break? (A) Tire (B) Wood Board
Example Output:
A