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: Mammals have a layer of fat under the skin to help insulate the body., Fact2: Glass insulation keeps beverage warm for hours., Question: What keeps mammals warm? (A) evaporation (B) Animal fur (C) staying warm (D) sweating (E) They have thick fur (F) with their fur (G) a layer of fat (H) Veins and arteries.
Example Output: G

Example Input: Fact1: medicine is used for curing people when they are sick, Fact2: People get sick and die., Question: What can medicine prevent? (A) wealth (B) sunlight (C) birth (D) ADHD (E) dying (F) Natural disaster (G) haze (H) danger
Example Output: E

Example Input: Fact1: water vapor cooling causes that water vapor to condense, Fact2: When water vapor condenses, energy is released., Question: Water vapor cooling causes that water vapor to do what? (A) heating liquids (B) boiling (C) It gets heated up (D) Heat energy (E) chemical changes (F) solid, liquid, gas (G) evaporation (H) Release energy
Example Output:
H