TASK DEFINITION: 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).
PROBLEM: Sentence: A dirty tooth isn't as smooth as a clean tooth. Question: Which surface will a toothbrush move over at a greater rate of speed? (A) dirty tooth (B) clean tooth

SOLUTION: dirty tooth

PROBLEM: Sentence: Stacey and Marilyn are driving down the interstate at night and need to gas up their car. They sight a gas station sign that looks very dim and becomes more easily visible as they drive. Question: When does the sign look more luminous? (A) when it's far off (B) when it's nearby

SOLUTION: when it's far off

PROBLEM: Sentence: Two boats set sail from the same port and experience similar speeds on their journey. The first stops its trip in London, while the second continued onward to Norway. Question: Which of the two has covered more distance by the end of their respective journies? (A) The boat to London (B) the boat to Norway

SOLUTION:
The boat to London