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".

Example Input: I don't know why I used paper to write my essay instead of computer, it's convenient to edit on the _ . (A) paper (B) computer
Example Output: B

Example Input: The dog rejected the blanket in favor of the bed because the _ was clean. (A) blanket (B) bed
Example Output: B

Example Input: Maria showed Christine the best way to clean linen clothes since _ had a lot of prior experience with this material. (A) Maria (B) Christine
Example Output:
A