You are given a sentence, a question and two answer options ('A' and 'B'). Your task is to find the **incorrect** answer (return the string of the incorrect option, not A/B).
Q: 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
A: 
white ball