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: Asteroids can be huge. But not as big as the sun. Question: Which has a weaker gravity? (A) Asteroid (B) Sun
Example Output: B

Example Input: Sentence: A speed boat and a row boat take off from a dock. The row boat is barely moving, while the speed boat zooms off at a quick pace. Each boat stops at the same time. Question: Which boat is closer to the dock it left from? (A) row boat (B) speed boat
Example Output: B

Example Input: Sentence: A bird is much faster then a beetle. Question: If both animals make the same journey, which will arrive sooner? (A) beetle (B) bird
Example Output:
A