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").

Input: Consider Input: Fact1: thick fur can be used for keeping warm, Fact2: When the body is warm, heat production is minimized., Question: thick fur can be used for minimizing what? (A) heat energy (B) heat production (C) scattered light (D) energy usage (E) freezer burn (F) movie production (G) fur production (H) Temperature

Output: B


Input: Consider Input: Fact1: Evolution occurs in response to a change in the environment., Fact2: Extinction is a natural part or the process of evolution., Question: What happens to an environment to cause extinction?  (A) relocation (B) changes (C) rain (D) exposure (E) forces (F) wind (G) Pollution (H) discovery

Output: B


Input: Consider Input: Fact1: Fertilization occurs when sperm swim to an egg inside an archegonium., Fact2: When a sperm cell fertilizes an egg cell, a fertilized egg or zygote is formed., Question: Where is a zygote formed by sperm swimming to an egg? (A) colder and wetter (B) ocean water (C) graptolites (D) rapid expansion (E) a delta (F) an archegonium (G) barnacles (H) an organism's body


Output: F