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: Mutations are essential for evolution to occur., Fact2: Mutations are changes in the DNA sequence., Question: What is essential for evolution to occur? (A) Changes in DNA sequences (B) Plant reproduction (C) Natural disasters (D) Gamma radiation (E) biological diversity (F) DNA sequences staying the same (G) the environment (H) that material's properties

Ex Output:
A


Ex Input:
Fact1: disease has a negative impact on an organism, Fact2: Peace is freedom from sickness and disease., Question: What has a negative impact on an organism? (A) influenza (B) sickness (C) smallpox (D) leukemia (E) liver cancer (F) food (G) air (H) water

Ex Output:
B


Ex Input:
Fact1: Ethologists usually study how animals behave in their natural environment., Fact2: Ethology is the study of behavior., Question: What is the term used for an individual who is learning ethology? (A) Biologist (B) ruler (C) Behaviorist (D) Ethologist (E) humans (F) A Greek letter (G) recovery (H) Mechanic

Ex Output:

D