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.
Q: Question:Which mythological lumberjack, usually believed to be a giant, was first documented in the work of US journalist James MacGillivray in 1910? ,  Options: [A.Jack Miller B.Paul Bunyan] 
A: 
B