Detailed Instructions: 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".
Problem:A crater formed on the moon. (A) A comet passed by the moon. (B) A comet collided with the moon., Question: cause
Solution:
B