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:
Ryan decided to go for a walk to see Jason as a surprise visit but _ was lost. (A) Ryan (B) Jason

Ex Output:
A


Ex Input:
Mark preferred to study home instead of in the university, because the _ environment is loud. (A) home (B) university

Ex Output:
B


Ex Input:
Christopher has a really nasting angina and asks Joseph for an advice, because _ has never experience the angina. (A) Christopher (B) Joseph

Ex Output:

A