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: Supersaturation is inferred to be a common state for atmospheric haze particles., Question: What decreases the temperature by blocking the Sun? (A) cilia (B) the Sun (C) the wind (D) haze (E) ice (F) fat (G) rain (H) acids

Output: D

Input: Consider Input: Fact1: Behaviors that improve fitness increase through natural selection., Fact2: Adaptation traits contribute to individual fitness and to the evolution of animal genetic resources., Question: The evolution of animal genetic resources can be impacted by: (A) extinction (B) Mars (C) competition (D) Darwin (E) agriculture (F) behavior (G) environment (H) Galapagos Islands

Output: F

Input: Consider Input: Fact1: Cells vary in size as well as shape, but all cells are very small., Fact2: Neurons are cells that are similar to other cells., Question: Which item found in the human body is smaller? (A) the eyes (B) Epidermis (C) all matter (D) Fingernail. (E) Inches (F) Baby tooth. (G) Small eyelash. (H) Neuron.
Output: H