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").

Ex Input:
Fact1: Cell division is how organisms grow and repair themselves., Fact2: Cell division is by mitosis ., Question: What is required by division? (A) voltage (B) Microscope (C) loose soil (D) Energy. (E) Energy (F) relocation (G) warmth (H) mitosis

Ex Output:
H


Ex Input:
Fact1: All life relies on a relatively narrow range of pH, or acidity., Fact2: Human life is dependent life., Question: what relies on a relatively narrow range of acidity? (A) gravity (B) mammals (C) animals (D) trees (E) humans (F) density (G) volume (H) potatoes

Ex Output:
E


Ex Input:
Fact1: using a gasoline engine requires burning gasoline, Fact2: Gasoline ignites easily and burns vigorously., Question: using a gasoline engine requires what? (A) electricity (B) no ignition (C) carbon dioxide (D) easy ignition (E) difficult ignition (F) no gasoline (G) hydrogen and oxygen (H) adding heat

Ex Output:

D