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: 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
Example Output: B

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: if a neutral atom loses an electron then an atom with a negative charge will be formed, Fact2: When an atom or molecule is no longer neutral it is called an ion ., Question: if an atom loses an what it forms an ion (A) energy (B) Energy. (C) heat energy (D) electron (E) nucleus (F) vaporization (G) neutron (H) bond
Example Output:
D