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: when light enters the eye through the pupil , that light falls on the retina, Fact2: Images are retained on the retina of a viewer's eye for a fraction of a second after they strike it., Question: Where are images retained? (A) Retina (B) RNA (C) calcite (D) an object (E) arteries (F) energy (G) squids (H) segmented

Output: A

Input: Consider Input: Fact1: the type of material through which sound passes changes the speed at which sound travels, Fact2: Sound vibrations travel at different speeds through different materials., Question: the type of material through which sound passes changes the what? (A) vibrating mass (B) occurs over a wide range (C) passage of time (D) relationship (E) rapid changes occur (F) 70-75 degrees Fahrenheit (G) sound vibrations (H) sound of silence
Output: G