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: Butter is a fat that is a solid at room temperature., Fact2: Room temperatures between 40 and 80 Fahrenheit, or 5 and 27 Celsius, are best for storage., Question: When is butter a solid? (A) rapid changes occur (B) protect eyes in the lab (C) around 5 to 27 degrees Celsius (D) one effect of diabetes (E) protein foreign to the body. (F) natural atmosphere component (G) reduce acidity of food (H) speed at which sound moves

Ex Output:
C

Ex Input:
Fact1: Sperm had to swim from male to female reproductive organs for fertilization., Fact2: Gametes, the sperm and eggs, are produced by mitosis in the haploid gametophyte., Question: What swims from male to female reproductive organs for fertilization? (A) gametes (B) barnacles (C) fur seals (D) eggs (E) offspring (F) haploid (G) seeds (H) diploid

Ex Output:
A

Ex Input:
Fact1: Roundworms may be free-living or parasitic., Fact2: Dogs remain susceptible to reinfection with hookworms and roundworms., Question: Dogs remain what to free-living or parasitic species? (A) hungry for (B) warm-blooded (C) susceptible (D) fertile (E) taken over by (F) more abundant (G) Animal survival (H) friendly towards

Ex Output:
C