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:
Jason was quite short but Derrick was really tall. _ didn't have to stand on a stool to reach the top shelf. (A) Jason (B) Derrick

Ex Output:
B


Ex Input:
I put the pen away and used a pencil to write my letter, as the _ worked poorly with the paper. (A) pen (B) pencil

Ex Output:
A


Ex Input:
Adam always preferred going to church instead of class because _ improved his mental state. (A) church (B) class

Ex Output:

A