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: a refrigerator is used for keeping food fresh for a long period of time, Fact2: Refrigerators are major users of electricity., Question: What requires a lot of electricity? (A) riding a bicycle (B) An emergency lighting source. (C) repair cells in the human body (D) sleeping on the floor (E) visiting a dam (F) Something that take eight minutes to travel to the Earth (G) Heating a metal filament. (H) keeping food fresh for long periods of time
[A]: H

[Q]: Fact1: tidal energy can be used to produce electricity, Fact2: Tidal caves are formed by the energy of the rising and falling tides., Question: what can produce electricity? (A) rivers (B) animal transport (C) tidal caves (D) Nematoda (E) rays or beams (F) animals (G) cactuses (H) photons
[A]: C

[Q]: Fact1: creating wood-free paper does not require cutting down trees, Fact2: For that, the player needs lumberjacks to cut down the trees., Question: Creating wood-free paper does not require what? (A) scarce resources (B) patience (C) deforestation (D) testing (E) science (F) lumberjacks (G) Energy. (H) carbon dioxide
[A]:
F