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).

Example Input: Sentence: A life vest floating in calm water has low friction while one floating in choppy water has high friction. Question: Which type of water will allow the life vest to float the furthest? (A) calm water (B) choppy water
Example Output: choppy water

Example Input: Sentence: War Emblem stopped from a brisk trot to greet Northern Dancer, who had been standing still and contently grazing in the pasture. Question: Which horse would be sweating more? (A) War Emblem (B) Northern Dancer
Example Output: Northern Dancer

Example Input: Sentence: A spring rolling along a bed experiences very low friction, while one rolling along the floor experiences high friction. Question: Which surface is less rough? (A) floor (B) bed
Example Output:
floor