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:Who was the man behind The Chipmunks? ,  Options: [A. David Seville, B. Alvin Seville] 
Example output: A
Example explanation: David Seville was the man behind the Chipmunks. So, the correct answer is A.
Q: Question:What type of natural disaster killed 173 people in Victoria, Australia in 2009? ,  Options: [A.bushfires B.earthquake] 
A:
A