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.

Q: Sentence: Jim and Bob are running on the track.  Jim has a hurt knee and can't run as fast. Question: After a half hour, who has run further? (A) Jim (B) Bob

A: A
****
Q: Sentence: Tom has recently gotten a prosthetic arm and he notices that it is somewhat stronger than his human arm. Tom tosses a tennis ball to his friend, first with the human arm then with the prosthetic arm. Question: Which arm will toss the ball a shorter distance? (A) Tom's prosthetic arm (B) Tom's human arm

A: A
****
Q: Sentence: A penguin is forced to swim at a low rate of speed through icy water, but can swim rather quickly through clear water. Question: Which water is the most rough? (A) icy water (B) clear water

A:
B
****