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: Consider Input: Fact1: satellites are used to take images from space, Fact2: Images of Earth taken from space., Question: Images of Earth are taken by (A) satellites (B) light (C) Communication (D) millions (E) radar (F) Plate tectonics (G) moving plates (H) lamphreys

Output: A


Input: Consider Input: Fact1: moss causes chemical weathering, Fact2: Mosses Mosses are flowerless plants that grow in clumps., Question: What can cause chemical weathering? (A) Calcium carbonate (B) our nearest star (C) global warming (D) sea squirts (E) swamp vegetation (F) single-celled organisms (G) flowerless plants (H) Earthworms

Output: G


Input: Consider Input: Fact1: burning fossil fuels increases the carbon in the atmosphere, Fact2: More carbon in the atmosphere means atmospheric warming., Question: What causes global warming? (A) Oceans rising (B) Deforestation (C) Greenhouse gasses (D) Burning fossil fuels (E) Greenhouse gases (F) Movement of an air mass (G) Leaving lights on (H) tectonic plates coliding


Output: D