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: Our earth is one of the largest objects in space, but nothing compared to the sun. Question: Which object has stronger gravity? (A) Earth (B) Sun
Example Output: A

Example Input: Sentence: Mike and Sue decide to ride their bikes around the park. They follow the same path but Mike rides his bike twice as fast as Sue. Question: After ten minutes, who will have covered less distance? (A) Mike (B) Sue
Example Output: A

Example Input: Sentence: Mary's kitchen floor is slicker then her hallway floor. She was feeding her dogs one day and some kibble slid across both surfaces. Question: Which surface caused the kibble to heat up less? (A) kitchen floor (B) hallway floor
Example Output:
B