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: Carbon cycles quickly between organisms and the atmosphere., Fact2: Water, carbon dioxide, and nitrogen are all needed by living things., Question: What is needed by living things? (A) hate (B) sunlight (C) Chemical energy (D) pain (E) love (F) hydration (G) The atmosphere (H) Energy.

Ex Output:
G


Ex Input:
Fact1: Active immunity results when an immune response to a pathogen produces memory cells., Fact2: Pathogens are germs that cause disease., Question: Active immunity is when an immune response occurs after a germ produces what? (A) harmful substances (B) bioaerosols (C) rapid expansion (D) Allergies (E) anemia (F) it needs them (G) Chemical energy (H) memory cells

Ex Output:
H


Ex Input:
Fact1: Mutations may change the structure of a chromosome or just change a single nucleotide., Fact2: DNA is made up of nucleotides., Question: What do mutations do to DNA? (A) It expands (B) Damages them (C) negative (D) Moisturize it. (E) Help it. (F) Destroy it. (G) It decreases (H) Change it.

Ex Output:

H