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: an animal usually requires a warm body temperature for survival, Fact2: Mammals are also warm-blooded and are covered with hair or fur., Question: What helps maintain body temperature? (A) hats (B) Lift (C) the inside of a refrigerator (D) fur (E) skin (F) arctic winds (G) freezing water (H) hair
Example Output: D

Example Input: Fact1: Mammals can also generate little bursts of heat by shivering., Fact2: Polar bears are mammals., Question: What can generate little bursts of heat by shivering? (A) alpacas (B) bacteria (C) animals (D) polar bears (E) phytoplankton (F) rabbit (G) viruses (H) humans
Example Output: D

Example Input: Fact1: Evaporation of sweat uses energy, and the energy comes from body heat., Fact2: Animals are inefficient energy converters., Question: How do animals dissipate body heat? (A) sweat (B) eat food (C) lay in the sun (D) insulation (E) coat (F) osmosis (G) fur (H) cooling
Example Output:
A