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: A post office counter is less bumpy then a coffee table. Question: Which surface will force a letter to move at a lower rate of speed when slid across it? (A) post office counter (B) coffee table

A: post office counter
****
Q: 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

A: Northern Dancer
****
Q: Sentence: A picture frame sliding across a dresser makes it heat up less then one sliding across a floor. Question: Which surface will the picture frame move the slowest on? (A) dresser (B) floor

A:
dresser
****