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: Active immunity results when an immune response to a pathogen produces memory cells., Fact2: Pathogens are germs that cause disease., Question: Active immunity is when an immune response occurs after a germ produces what? (A) harmful substances (B) bioaerosols (C) rapid expansion (D) Allergies (E) anemia (F) it needs them (G) Chemical energy (H) memory cells

Output: H


Input: Consider Input: Fact1: a prism is used for refracting light, Fact2: Refraction is the bending of light cause by a speed change when it passes through different media., Question: What aspect of light changes when it passes from air into a prism? (A) power (B) seasons (C) speed (D) energy (E) a wave (F) Joules (G) heat (H) unique

Output: C


Input: Consider Input: Fact1: if an object is black then that object absorbs all visible light, Fact2: Some leopards are melanistic, which produces a black fur., Question: Which animal would absorb the most visible light? (A) sea urchins (B) in the frog family (C) Something formed from skeleton (D) A melanistic panther (E) all animals (F) amphibians (G) an amoebae (H) the body's largest organ


Output: D