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:
She had a lower back pain but her headache was gone, so the _ problem was bothering her. (A) lower back (B) headache

Ex Output:
A

Ex Input:
I brought out the playing cards and tarot cards, we wanted to have a game so I took the _ and shuffled. (A) tarot cards (B) playing cards

Ex Output:
B

Ex Input:
The dogs had more fun running in the field than in the cage because the _ was longer. (A) field (B) cage

Ex Output:
A