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: Aging occurs as cells lose their ability to divide., Fact2: Death is attributed to the infirmities of old age., Question: What occurs as cells lose their ability to divide? (A) illness (B) Winter (C) disease (D) death (E) youth (F) die (G) black holes (H) cell growth

Output: D


Input: Consider Input: Fact1: wind is used for producing electricity, Fact2: Differential heating of air produces wind., Question: Differential heating of air can be harnessed for what? (A) Animal survival (B) direct energy (C) reducing acid rain (D) Movement of an air mass (E) heat energy (F) running and lifting (G) electricity production (H) faster movement


Output: G