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: when a metal rusts , that metal becomes orange on the surface, Fact2: Iron rusts in the presence of oxygen and water., Question: Exposure to oxygen and water can cause iron to  (A) decrease strength (B) melt (C) uncontrollable burning (D) thermal expansion (E) turn orange on the surface (F) vibrate (G) Extremes of temperature (H) levitate

Ex Output:
E


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: Behaviors that improve fitness increase through natural selection., Fact2: Natural selection is differential reproduction., Question: Behaviors that improve fitness increase through (A) differential reproduction (B) produce offspring (C) biological diversity (D) metabolic reaction (E) recovery time from fatigue (F) characteristics (G) barks and snarls (H) members of their own species

Ex Output:

A