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.

Example Input: Question:Horatio was a legendary Roman hero who defended a bridge against which army? ,  Options: [A.Etruscan B.Tiber] 
Example Output: B

Example Input: Question:One of the longest ruling monarchs of the 20th century and a massive and dangerous volcano in the USA share which name? ,  Options: [A.Columbus B.Rainer] 
Example Output: B

Example Input: Question:Which 20th century philosopher wrote 'Being And Nothingness' and 'Critique Of Dialectic Reason'? ,  Options: [A.wordsworth B.jean paul] 
Example Output:
B