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:
With the glasses you could not see to the horizon, but the lenses allowed you too, since the _ were optically strong. (A) glasses (B) lenses

Ex Output:
B


Ex Input:
In order to call his mom, he bought a landline and cell phone. The _ was more beneficial because it was mobile. (A) cell phone (B) landline

Ex Output:
A


Ex Input:
Derrick told Kevin how he met the President of the United States last week.  _ was astonished by the story. (A) Derrick (B) Kevin

Ex Output:

B