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: an aquatic animal requires great amounts of water to survive, Fact2: Beavers are primarily aquatic animals., Question: what requires great amounts of water to survive (A) sunlight (B) beavers (C) octopus (D) mussels (E) trout (F) carbon (G) oxygen (H) amphibians

Ex Output:
B

Ex Input:
Fact1: Sweat wets the skin, and when it evaporates, it cools the body., Fact2: Sweat is released from sweat glands beneath the skin, and as it evaporates, the skin is cooled., Question: What cools the skin? (A) humidity (B) temperature (C) condensation (D) Solar energy (E) evaporation (F) vaporization (G) layers of fat (H) water vapor

Ex Output:
E

Ex Input:
Fact1: All chemical reactions require activation energy to get started., Fact2: Chemical changes are a result of chemical reactions., Question: What do ALL chemical changes require to occur? (A) during the day (B) heating liquids (C) Activation energy (D) wavelengths and photons (E) Burning fuel and air (F) kinetic energy (G) electromagnetic energy (H) direct energy

Ex Output:
C