Instructions: 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: infection can cause bodily tissues to swell, Fact2: Joints swell painfully., Question: What can infection cause? (A) Joint pain (B) Limber joints (C) Loose joints (D) influenza (E) chickenpox (F) disease (G) Money creation (H) anemia
Output:
A