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).

[EX Q]: Sentence: Yolanda was driving, and she turned onto a road that ran alongside some railroad tracks. A train was moving down the tracks, going in the same direction that she was. A few minutes later, the train had passed by her and she could only see the back of the train. Question: Which vehicle had a greater rate of speed? (A) the car (B) the train
[EX A]: the car

[EX Q]: Sentence: Steve is waiting at the gym for his brother's basketball practice to end. He starts hitting around a hockey puck with his stick. The gym has a carpeted floor and more friction than the ice rink he goes to. Question: Which surface is rougher? (A) carpet (B) ice rink
[EX A]: ice rink

[EX Q]: Sentence: Bill Gates and Lebron James are playing a game of basketball.  Bill Gates is an old guy who doesn't work out, and Lebron James is a young sports adonis who trains daily.  Both stand at half court, but only one hits the backboard. Question: Who? (A) Bill Gates (B) Lebron James
[EX A]:
Bill Gates