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: Female monotremes lack a uterus and vagina., Fact2: Monotremes are mammals that lay eggs., Question: What do some female mammals lack? (A) epidermal (B) vision (C) uterus (D) alleles (E) fur (F) a cuticle (G) eardrum (H) alveoli

Ex Output:
C


Ex Input:
Fact1: the gravitational pull of the Moon on Earth 's oceans causes the tides, Fact2: To the west is the Pacific Ocean., Question: the gravitational pull of the Moon on what causes the tides? (A) the sun (B) earth (C) squids (D) mountains (E) Pacific (F) Jupiter (G) amoebae (H) our star

Ex Output:

E