You are given a sentence, a question and two answer options. Your task is to write down the index ('A' or 'B') of the **incorrect** option for the given question.

Let me give you an example: Sentence: Jacob and Benny are squatting at the gym. Jacob has thin frail legs and Benny has big strong legs. Question: Who squats less weight? (A) Jacob (B) Benny
The answer to this example can be: B
Here is why: Typically, people with thin frail legs squat less weight than people with big strong legs, so the incorrect answer is Benny.

OK. solve this:
Sentence: Two people were driving to a destination. One person was driving a tank and the other person was driving a car. Question: Which thing was fastest to speed up? (A) The tank (B) a car
Answer:
A