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: Eddy and Norma are running. They are running at the same speed, but Eddy started running before Norma. Question: If they stop at the same time, who will have run farther? (A) Eddy (B) Norma

Ex Output:
B

Ex Input:
Sentence: Two trolleys are running on parallel tracks. They both go in the same distance for 40 minutes. The trolley on the left hasn't gone as far as the trolley on the right. Question: Which one had the higher velocity? (A) the one on the left track (B) the one on the right track

Ex Output:
A

Ex Input:
Sentence: Belle has two horses; a grey one and a white one. The grey one is fat, the white one is thin. Question: When racing, which horse will get up to speed more quickly? (A) white horse (B) grey horse

Ex Output:
B