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: decomposition increases amount of organic matter in soil, Fact2: Fungi are involved in decomposition, as well., Question: What can help increase the amount of organic matter in soil?  (A) Fungi (B) mussels (C) pine (D) worms (E) animals (F) Enzymes (G) solutes (H) trees

Output: 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: Hydrogen bonds cause water to expand when it freezes., Fact2: Water is everywhere H20., Question: Hydrogen bonds cause what to expand when it freezes? (A) salt (B) mercury (C) NaCl (D) lake (E) H20 (F) rain (G) h2o (H) oxygen


Output: E