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: An electric fan makes 180 revolutions per minute., Question: What with the vanes rotating causes air here to move? (A) It reaches the dew point (B) heat to cooler objects (C) whale movement (D) it flows to a lower level (E) Earth's axis of rotation is tilted (F) vanes on submarins (G) Martian winds rotating. (H) 180 revolutions per minute.
A:
H