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:
The pharmacist said to store the medicine in a dark place because the _ would protect it from being exposed to light. (A) medicine (B) dark place

Ex Output:
B

Ex Input:
The problem of my sister this year is worse than my situation was last year because the _ is fixable. (A) problem (B) situation

Ex Output:
B

Ex Input:
Samuel taught Matthew how to calm his overactive mind because _ had successfully done so in the past. (A) Samuel (B) Matthew

Ex Output:
A