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").

[Q]: Fact1: plant requires seed dispersal for reproduction, Fact2: Reproductive investment was measured as seed mass, samara size, and dispersal ability., Question: What requires investment, seed mass, size and dispersal? (A) plants (B) Species (C) animals (D) coral (E) Oak (F) gene flow (G) Frogs (H) mussels
[A]: A

[Q]: 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
[A]: F

[Q]: Fact1: howling is used to warn other wolves by wolves, Fact2: Warnings and cautions are there for a good reason., Question: What kind of sound is used by wolves to caution other wolves? (A) whiplash (B) howling (C) a growling sound (D) several (E) a sniffing sound (F) noise (G) shaking (H) sound
[A]:
B