Instructions: 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.
Input: Sentence: Ian rolls two balls down a sidewalk at the same time. One is red, the other is white. The white ball goes further than the red one. Question: Which ball went slower? (A) white ball (B) red ball
Output:
A