In this task, you are given a premise sentence, two possible options and a question word. If the question was cause you should select the option that is a possible cause of the premise sentence, and if the question word was effect you should find the option which is a possible effect of the premise sentence. Answer with "A" or "B".

Ex Input:
The man closed the book. (A) He finished reading it. (B) It provoked him to think., Question: cause

Ex Output:
A


Ex Input:
The computer crashed. (A) I backed up my files. (B) I downloaded a virus., Question: cause

Ex Output:
B


Ex Input:
We found empty seats in the theatre. (A) The film began. (B) We sat down., Question: effect

Ex Output:

B