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: Kylie had her mind set on seeing Venice by boat, but she was in a hurry so she saw it by trolley since the _ was fast. (A) trolley (B) boat
Example Output: A

Example Input: Sarah was constantly feeling dizzy but not Betty because _ did not have symptoms of vertigo. (A) Sarah (B) Betty
Example Output: B

Example Input: Joe stacked the paperback books above the blue binders, so the _ were on the top. (A) books (B) binders
Example Output:
A