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: a refrigerator is used for keeping food fresh for a long period of time, Fact2: Cold temperatures keep food fresh and inhibit the growth of most bacteria., Question: A refrigerator is used for inhibiting the growth of what on food? (A) some invertebrates (B) viruses (C) molds (D) spores (E) Echinoids (F) most bacteria (G) Nematoda (H) cones

Output: F


Input: Consider Input: Fact1: Cells are the basic units of the structure and function of living things., Fact2: Tigers are the largest of the living cats., Question: Cells are the basic units of the structure and function of what? (A) water (B) mammals (C) ice (D) tigers (E) animals (F) humans (G) plants (H) the Sun

Output: D


Input: Consider Input: Fact1: a laser is used for producing light, Fact2: Light is the visible form of electromagnetic energy., Question: A laser is used for producing what? (A) an electron microscope (B) electromagnetic energy (C) heat is produced (D) chemical changes (E) Electrical energy (F) hydrogen and oxygen (G) activation energy (H) objects that have mass


Output: B