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:Benot B. Mandelbrot worked on a wide range of mathematical problems, including mathematical physics and quantitative finance, but is best known as the father of what? ,  Options: [A.Math Practice B.Fractal Trees]
Example Output: A

Example Input: Question:What were Pangaea and Gondwana? ,  Options: [A.continent B.supercontinent] 
Example Output: B

Example Input: Question:Michael Phelps who during the Summer Olympics 2012 brought his swimming medal total to a record 18 golds represents which country? ,  Options: [A.USA B.Canada] 
Example Output:
A

