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: Veins generally carry deoxygenated blood., Fact2: Arteries and veins are blood vessels., Question: Arteries in the body are able to carry what? (A) saliva (B) breathe (C) water (D) Air (E) oxygen (F) blood (G) veins (H) liquid

Ex Output:
F

Ex Input:
Fact1: Organisms cluster around hydrothermal vents in the ocean floor., Fact2: To survive, some organisms living near hydrothermal vents have formed close associations., Question: How is survival ensured around hydrothermal vents? (A) heat produced (B) Eating a lot (C) Reproducing quickly (D) biological diversity (E) vegetation (F) Being in a cluster (G) Staying far apart (H) hydrate their cells

Ex Output:
F

Ex Input:
Fact1: fossil fuels are formed from dead organisms over time, Fact2: Oil and gasoline are fossil fuels., Question: What are oil and gasoline formed from? (A) A mixture of water and heat (B) Dead organisms (C) burning (D) one celled organisms (E) aqueous solution (F) Air and land (G) heating liquids (H) Living organisms

Ex Output:
B