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 greenhouse is used to protect plants by keeping them warm, Fact2: Flower size varies by plant., Question: How does a greenhouse protect flowers? (A) keeps them away from the sun (B) keeps them warm (C) keeps them out of soil (D) an external framework (E) it needs them (F) keeps them cold (G) rays or beams (H) by indirect light

Ex Output:
B


Ex Input:
Fact1: Glucose is used for energy by the cells of most organisms., Fact2: Glucose metabolism relates to how cells use or store glucose., Question: what do cells do with glucose? (A) live (B) grow (C) reacts (D) energy. (E) survive (F) store (G) sleep (H) move

Ex Output:
F


Ex Input:
Fact1: a flashlight requires a source of electricity to produce light, Fact2: Batteries are a very handy source of power., Question: What requires a battery to produce light? (A) peachleaf willow (B) a dog (C) electrically (D) a cat (E) a flashlight (F) energy (G) another battery (H) heat energy

Ex Output:

E