This task involves asking a question, providing a set of 2 options. You are expected to choose the best answer to the question. The output will be in the form of A or B, corresponding to which option is chosen.

Q: Question:Who created St Trinians, a fictional girls' boarding school, the subject of 8 books and 7 films between 1954 and 2009? ,  Options: [A.Ronald William Fordham Searle B.St Trinian] 

A: A
****
Q: Question:What city's catacombs contain the bones of over six million people? ,  Options: [A.London B.Paris] 

A: B
****
Q: Question:What does the proofreading notation stet mean? ,  Options: [A.copy editing B.let it stand or ignore indicated edit mark] 

A:
A
****