Given the task definition and input, reply with output. 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".

The boy's mouth stung. (A) He ate a pepper. (B) He blew out the candle., Question: cause

A