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: high temperatures can cause an object to combust, Fact2: Combustion of fuel is one of the main causes of air pollution., Question: What can high temperatures cause? (A) hyperthyroidism (B) Dehydration (C) Greenhouse gases (D) chemical reaction (E) global warming (F) contamination (G) Air pollution (H) sweating
Output:
G