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.

[EX Q]: Sentence: Erika is trying to get a paper plane to fly faster and further. She makes one that is heavy, and one that is very light. Question: Which will go faster? (A) light plane (B) heavy plane
[EX A]: B

[EX Q]: Sentence: Jupiter is the largest planet. The sun however is still much bigger. Question: Which planet has more gravity? (A) Jupiter (B) Sun
[EX A]: A

[EX Q]: Sentence: Greg and Hank each plan a cross country journey. Greg takes a car. Hank wants to walk cross country. Question: Who crosses the country first? (A) Greg (B) Hank
[EX A]:
B