Definition: In this task, you are given two facts, and a multiple-choice question. Based on the given facts, answer the question with index of the correct option (e.g, "A").
Input: Fact1: Pneumonia may be caused by an infection or injury of the lungs., Fact2: Viral pneumonia is usually milder than bacterial pneumonia., Question: Viral and what disease can both be caused by injury of the lungs (A) tongue (B) the skin (C) bacterial (D) throat (E) Pollution (F) fungi (G) smoking (H) ribs
Output:
C