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: bees convert nectar into honey, Fact2: Butterflies feed on nectar produced by flowers., Question: From what part of the plant do bees collect the substance they need to make honey? (A) Fruit (B) a hosta (C) food (D) Leaves (E) keratin (F) Flowers (G) liquids (H) Stem
[A]: F

[Q]: Fact1: an egg requires warmth to survive, Fact2: Inside the egg, the developing rattlesnake is nourished by the yolk of the egg., Question: a developing rattlesnake requires what to survive (A) warmth (B) companionship (C) nutrients (D) shade (E) desert (F) food (G) energy (H) air
[A]: A

[Q]: Fact1: Viruses cause many human diseases., Fact2: Some smallpox viruses are maintained in laboratories., Question: What can smallpox cause? (A) contamination (B) harmful substances (C) vaccines (D) photosynthesis (E) extinction (F) cellular respiration (G) Destroy crops (H) human disease
[A]:
H