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 Q]: I learned how to play the board game. (A) My friend explained the rules to me. (B) My friend got the rules wrong., Question: cause
[EX A]: A

[EX Q]: I decided to stay home for the night. (A) The forecast called for storms. (B) My friends urged me to go out., Question: cause
[EX A]: A

[EX Q]: The child became immune to the disease. (A) He avoided exposure to the disease. (B) He received the vaccine for the disease., Question: cause
[EX A]:
B