Definition: 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").
Input: Fact1: a airplane is used for moving people across bodies of water, Fact2: Millions of people fly safely in airplanes every year., Question: What transports millions of humans over water every year? (A) helicopters (B) gliders (C) electricity (D) engines (E) airplanes (F) space ships (G) Gravity (H) rivers
Output:
E