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 Q]: Fact1: astronauts require preserved food for extended flights, Fact2: An astronaut is a scientist who is a space explorer., Question: Space explorers require preserved foods for (A) ground training (B) nutrients (C) Dehydration (D) survival (E) long flights (F) short flights (G) Special disposal (H) day trips
[EX A]: E

[EX 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
[EX A]: F

[EX Q]: Fact1: if a tree falls then sunlight becomes available to the surrounding plants, Fact2: Like all plants, it needs sunlight and warmth to grow., Question: What happens to surrounding plants if a tree falls? (A) energy (B) grow (C) harm (D) seedling (E) startled (F) dead (G) scared (H) death
[EX A]:
B