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.

Ex Input:
Sentence: A man wants to pull a car out of the mud with his truck. He has a blue chain that is larger in diameter than the orange chain he has. Question: If the man wants to be more certain the chain will have the strength to pull the car, he would choose which chain? (A) the blue chain (B) the orange chain

Ex Output:
B


Ex Input:
Sentence: Shawna and Lynn are on a tandem bicycle. Shawna is pedaling furiously, while Lynn is barely moving and letting Shawna do most of the work. Question: Which of the two will show perspiration stains on her shirt first? (A) Shawna (B) Lynn

Ex Output:
B


Ex Input:
Sentence: A space station has been abandoned and left to drift through space. At one point, the space station drifts halfway between a normal star and a black hole. The black hole is much more massive than is the normal star. Question: Which body will the space station drift away from because of that body's lower gravitational force? (A) black hole (B) normal star

Ex Output:

A