In this task, you are given a question containing a blank (_) and two options. You should pick the best option to answer the question. Please answer with "A" or "B".

Ex Input:
Nick was given a dose of medication by Matthew because he had a fever. _ checked on him later. (A) Nick (B) Matthew

Ex Output:
B

Ex Input:
Sarah is overweight and has high cholesterol unlike Jessica who works out so _ is healthy. (A) Sarah (B) Jessica

Ex Output:
B

Ex Input:
John entered the recording studio and silenced the bell before he played the flute, because the _ was required for song. (A) bell (B) flute

Ex Output:
B