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: staying warm has a positive impact on an animal 's survival, Fact2: Furry animals grow thicker coats to keep warm in the winter., Question: Furry animals grow thicker coats which has what impact on their survival? (A) heat (B) positive (C) negative (D) energy (E) ironic (F) Energy. (G) decreased (H) adding heat

Ex Output:
B


Ex Input:
Fact1: Kidney failure may be treated with dialysis., Fact2: Diabetic kidney disease, kidney failure and other diabetes related kidney problems., Question: What can dialysis be used to treat? (A) the pancreas (B) Lymph fluid (C) non-bacterial prokaryotes (D) bacterial infections (E) saves lives (F) unicellular organisms (G) one effect of diabetes (H) antigens that cause allergy

Ex Output:

G