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: volcanic ash in the atmosphere decreases the temperature by blocking the sun, Fact2: Ash clouds are a particular problem for aircraft., Question: What are particular problems for aircraft in the atmosphere? (A) transportation (B) clog airways (C) extremely low humidity (D) volcanic clouds (E) feedback mechanisms (F) negative feedback (G) gas spreads in the air (H) very complex

Output: D


Input: Consider Input: Fact1: tectonic plates being pushed together causes earthquakes, Fact2: Plate Tectonics Movement of earth's surface reflects large scale convection of upper mantle., Question: What could happen because of movement in the upper mantle? (A) Earthquakes (B) Water expanding (C) Floods (D) Wildfires (E) erosion (F) Tornados (G) heating liquids (H) Movement

Output: A


Input: Consider Input: Fact1: Plants detect and respond to the daily cycle of light and darkness., Fact2: Flowers to be planted in between fruit plantings., Question: What grows after detecting light? (A) the skin (B) Solar panel. (C) Flowers. (D) Light bulb. (E) seeds (F) Silk flowers. (G) vegetation (H) lmestone


Output: C