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:
Sarah took their bird to Rachel at the vet office, but _ thought their bird was acting normally. (A) Sarah (B) Rachel

Ex Output:
B


Ex Input:
The metal splinter was easier to remove than the last time I got a wood one. The _ must have a tougher time coming out. (A) metal (B) wood

Ex Output:
B


Ex Input:
William had to go to Brett for some relationship advice. _ had a failing relationship because they were inexperienced with talking. (A) William (B) Brett

Ex Output:

A