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: hydropower requires damming a river, Fact2: Hoover Dam, the first dam on the Colorado River below Grand Canyon, was built between 1931 and 1935., Question: Which of these produces hydropower? (A) deuterostomes (B) Wind Turbines (C) power stations (D) Suez Canal (E) trout (F) Old Faithful Geyser (G) Hoover Dam (H) stations
[A]: G


[Q]: Fact1: creating paper requires cutting down trees, Fact2: Deforestation takes place when trees are cut down in the rainforest., Question: What can cause deforestation? (A) Planting flowers (B) Creating paper (C) Greenhouse gases (D) Filtering water (E) Greenhouse gasses (F) Cutting grass (G) Pesticides (H) Pollution
[A]: B


[Q]: Fact1: gravity causes objects that have mass to be pulled down on a planet, Fact2: Astronomy is the scientific study of the stars, planets and the other celestial bodies., Question: What causes objects to be pulled down on a celestial body? (A) power (B) friction (C) black hole (D) wind (E) gravity (F) orbit (G) earth (H) eclipse
[A]:
E