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: the vanes rotating in an electric fan causes air to move, Fact2: Wind is a movement of air, and air is invisible., Question: The vanes rotating in an electric fan causes what? (A) speed (B) water (C) earth (D) fire (E) heat (F) Lift (G) wind (H) motion
A:
G