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: a light bulb converts electrical energy into light energy when it is turned on, Fact2: Light bulbs are rated in Watts., Question: How is converted energy into light energy rated? (A) energy (B) unique (C) heat (D) good (E) watts (F) parsec (G) kilojoule (H) kinetic energy

Ex Output:
E


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: condensing causes a liquid to form, Fact2: Air carries moisture that can condense., Question: Air carries moisture that causes a what to form (A) expand (B) watershed (C) flooding (D) root (E) a solute (F) liquid (G) cracks (H) rainfall

Ex Output:

F