You will be given a definition of a task first, then some input of the task.
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: a car engine usually converts gasoline into motion and heat through combustion, Fact2: Internal combustion engines create friction., Question: Car engines convert gasoline into what? (A) light (B) Energy. (C) heat (D) fuel (E) color (F) electricity (G) friction (H) sound
Output:
G