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: Steroid hormones are made of lipids, such as phospholipids and cholesterol., Fact2: Fats are known as lipids., Question: What are steroid hormones made of? (A) bacteria (B) fats (C) sugar (D) muscle (E) H 2 O (F) sunlight (G) the Sun (H) SO2
Example Output: B

Example Input: Fact1: Echinoderms lack a centralized nervous system., Fact2: Sand dollars and sea biscuits are also echinoderms., Question: What lacks a centralized nervous system? (A) Damaged hearing (B) Humans (C) Horses (D) Sand dollars (E) insects (F) Chickens (G) Pesticides (H) barnacles
Example Output: D

Example Input: Fact1: force causes the speed of an object to increase, Fact2: Kinetic energy varies as the square of the speed of a moving body., Question: Applying a force in the same direction an object is moving will cause what? (A) slower rotational speed (B) deadly and devastating (C) greater potential energy (D) depress neuronal excitability (E) heat is produced (F) reduced momentum (G) by making heat (H) Increase in kinetic energy
Example Output:
H