Given the task definition and input, reply with output. 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").

Fact1: Most carcinogens cause cancer by producing mutations in DNA., Fact2: Cancer can cause death., Question: What can cause death? (A) carcinogens (B) rivalry (C) smoking tobacco (D) Heavy rains (E) happiness (F) treatment (G) Pesticides (H) high temperature
A