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: Jim and Kelly took their kids to watch the fireworks show. They wanted to make sure their kids didn't experience loud sounds that might damage their hearing. Question: In order to do this where would the family stand and observe? (A) In the front row of the crowd (B) in the back of the crowd
Example Output: A

Example Input: Sentence: An airplane and a train leave from the same location and travel for three hours. Question: Which traveled the least number of miles? (A) Airplane (B) Train
Example Output: A

Example Input: Sentence: Bob took his toy car outside to play with it. He rolled it on the street and then he rolled it in the grass. He noted that the toy car rolled much faster in the street. Question: Which surface caused more friction? (A) The street (B) The grass
Example Output:
A