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: Mating is generally preceded by courtship., Fact2: For example, a black rooster and a white hen mate, and the resulting offspring are gray., Question: What can result in offspring? (A) seeds (B) competition (C) courtship (D) travel (E) resistance (F) solitude (G) litter (H) reading

Ex Output:
C


Ex Input:
Fact1: smoking tobacco decreases stamina, Fact2: Manual dexterity and physical stamina are vital., Question: What decreases manual dexterity? (A) Dehydration (B) lifting weights (C) hypothyroidism (D) prolonged thirst (E) working out (F) eating healthy (G) smoking tobacco (H) Abnormal cell growth

Ex Output:
G


Ex Input:
Fact1: when a metal rusts , that metal becomes orange on the surface, Fact2: Rust stains are the result of oxidation., Question: metal becomes orange on the surface as a result of (A) magnetism (B) friction (C) treatment (D) heating (E) Car accidents (F) oxidation (G) air pollution (H) condesation

Ex Output:

F