You will be given a definition of a task first, then some input of the task.
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).

Sentence: Mike knows that a train is slower then a plane. Question: If he rides both vehicles for 40 minutes, which will have taken him a lesser distance? (A) train (B) plane
Output:
plane