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:
My knees buckled on the stairs. (A) I caught myself on the railing. (B) The railing came loose from the wall., Question: effect

Ex Output:
A


Ex Input:
The boy had trouble buttoning his shirt. (A) He refused to wear the shirt. (B) He asked his mother for help., Question: effect

Ex Output:
B


Ex Input:
The sick child coughed on his friend. (A) His friend got sick. (B) His friend sneezed., Question: effect

Ex Output:

A