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: 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: if a neutral atom loses an electron then an atom with a negative charge will be formed, Fact2: If an atom loses an electron, it is then positive., Question: what can an atom be? (A) Energy. (B) energy (C) microscopic (D) dangerous (E) small (F) nucleus (G) an object (H) negative

Ex Output:
H


Ex Input:
Fact1: a rainbow is formed by refraction of light by separating light into all different colors, Fact2: Introduction A rainbow is often given as an everyday example of a spectrum., Question: A spectrum is formed by refraction of light by separating light into all different what? (A) categories (B) dyes (C) photons (D) pigments (E) light (F) colors (G) Energy. (H) energy

Ex Output:

F