Teacher: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").
Teacher: Now, understand the problem? Solve this instance: Fact1: the vanes rotating in an electric fan causes air to move, Fact2: Air speed is an important contributor to cooling of skin temperature., Question: What do electric fans cool? (A) energy (B) kinetic energy (C) Human skin (D) sensory neurons (E) an object (F) deuterostomes (G) heat energy (H) the skin
Student:
C