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").
Q: Fact1: Lung cancer is most often caused by exposure to tobacco smoke., Fact2: Lung cancer for most is the consequence of smoking., Question: What is lung cancer a consequence of? (A) candy cigarettes (B) harmful substances (C) Greenhouse gases (D) malnutrition (E) water vapors (F) metabolic reaction (G) tobacco fumes (H) Pesticides
A:
G