Detailed Instructions: 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.
Problem:Question:Which 2008 Western film starred Ed Harris and Viggo Mortensen as lawmen, Jeremy Irons as a rancher and Renee Zellweger as a piano-playing widow? ,  Options: [A.Appaloosa B.Spiderman]
Solution:
A