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: a fire requires oxygen to burn, Fact2: In the vacuum of space, there's no oxygen to burn., Question: Where is fire impossible? (A) evaporation (B) In space (C) A computer (D) uncontrolled (E) Inside a car (F) On television (G) summer end (H) On a mountain

Ex Output:
B


Ex Input:
Fact1: Behaviors that improve fitness increase through natural selection., Fact2: Fitness traits relate to an animal s ability to survive and reproduce., Question: behaviors increase through what that improve traits of animal's ability to survive (A) competition (B) hunting (C) biological diversity (D) the environment (E) eating (F) produce offspring (G) natural selection (H) grooming

Ex Output:
G


Ex Input:
Fact1: keeping food cold is used for keeping food fresh, Fact2: Keep your food fresh, simple and as natural as possible., Question: What is used to keep foods as simple and as natural as possible? (A) Energy (B) sodium (C) lipids (D) heat (E) RNA (F) cold (G) fibers (H) sugar

Ex Output:

F