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: extreme heat and pressure change rock into metamorphic rock, Fact2: Slate is a metamorphic rock., Question: What rock is formed by extreme heat and pressure (A) erosion (B) crust (C) calcite (D) Slate (E) dead (F) forces (G) fibrous (H) complex

Output: D


Input: Consider Input: Fact1: Mammals have a layer of fat under the skin to help insulate the body., Fact2: Glass insulation keeps beverage warm for hours., Question: What keeps mammals warm? (A) evaporation (B) Animal fur (C) staying warm (D) sweating (E) They have thick fur (F) with their fur (G) a layer of fat (H) Veins and arteries.

Output: G


Input: Consider Input: Fact1: Organisms cluster around hydrothermal vents in the ocean floor., Fact2: Largest of the oceans on Earth is the Pacific Ocean ., Question: what floor do organisms cluster around hydrothermal vents on? (A) Pacific (B) small ponds (C) ground (D) limestone (E) sandstone (F) loose soil (G) atmosphere (H) crust


Output: A