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: 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: Many consumers feed at more than one trophic level., Fact2: Consumers are heterotrophs that feed on tissues of other organisms., Question: What may eat other organisms at more than one trophic level? (A) barnacles (B) chickens (C) fur seals (D) humans (E) heterotrophs (F) mammals (G) animals (H) rabbit
Example Output: E

Example Input: Fact1: cycles of freezing and thawing water cause ice wedging, Fact2: An ordinary ice road is therefore severely damaged by cracks induced by the traffic., Question: cycles of freezing and thawing water can cause what? (A) clean county roads (B) exposure to cold (C) severely damaged roads (D) Physical weathering (E) colder weather (F) Metling snow (G) smooth safe roads (H) rough riding
Example Output:
C