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: a flashlight requires a source of electricity to produce light, Fact2: Lanterns and flashlights are sources of light used for camping., Question: What does a lantern use a source of electricity for? (A) heat energy (B) staying warm (C) enclose light (D) produce light (E) absorb heat (F) reflect light (G) to move people (H) protect them

Ex Output:
D

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: heavy rains cause flooding, Fact2: Floods are deadly, floods are devastating., Question: what is deadly? (A) viruses (B) smallpox (C) cell mitosis (D) heavy rains (E) digestion (F) influenza (G) respiration (H) hyperthyroidism

Ex Output:
D