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: A surfboard isn't as flexible as cardboard. Question: Which item will break easier when bent? (A) surfboard (B) cardboard
Example Output: B

Example Input: Sentence: The planet Saturn has more mass then the planet Mercury. Question: Which plant has less of a gravitational field? (A) Saturn (B) Mercury
Example Output: A

Example Input: Sentence: Kristen is full of energy before work, but worn out after a long day of work. She has parked her car two blocks from work and walks more slowly between her car and her workplace after work than she did before work. Question: Which trip will Kristen take longer to make? (A) the trip before work (B) the trip after work
Example Output:
A