Task: Question Answering
Input (English): Professor Walden studies genetics at a local university. She believes that she has discovered information that contradicts a widely accepted theory. As a scientist and leader in the study of genetics, which action should she take?  
 (A) Announce to the world that her theory is better than the old theory. (B) Call the news media and tell them about her new theory. (C) Challenge the old theory with scientific evidence. (D) Request that the old theory be banned.
Output (English): C