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 are the only two types of mammal that can lay eggs? , Options: [A.platypus B.dog]
A:
A