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").

Example Input: Fact1: Organisms cluster around hydrothermal vents in the ocean floor., Fact2: To survive, some organisms living near hydrothermal vents have formed close associations., Question: How is survival ensured around hydrothermal vents? (A) heat produced (B) Eating a lot (C) Reproducing quickly (D) biological diversity (E) vegetation (F) Being in a cluster (G) Staying far apart (H) hydrate their cells
Example Output: F

Example Input: Fact1: Hormones are chemical messengers that control many body functions., Fact2: Growth hormone is in many ways an anti-aging hormone., Question: What controls anti-aging? (A) A computer (B) air (C) chemical messengers (D) ice (E) an electric stove (F) Electrical energy (G) water (H) Chemical energy
Example Output: C

Example Input: Fact1: electrical current running through a wire causes that wire to heat up, Fact2: When the wire is moved across the magnetic field, it creates an electric current., Question: What happens when a wire is moved across a magnetic field? (A) unidirectional (B) the wire heats up (C) deoxyribonucleic acid (D) permineralization (E) electromagnetic energy (F) activation energy (G) An object is seen (H) direct energy
Example Output:
B