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: 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
[EX A]: A

[EX Q]: Fact1: heat can change the state of matter, Fact2: Matter exists in a solid, liquid or gas state and can change forms., Question: _ can change liquid to gas. (A) magnetism (B) cycles (C) energy (D) vapors (E) condensation (F) gravity (G) thirst (H) Heat
[EX A]: H

[EX Q]: Fact1: if fossils of an animal or plant are found in a place then that animal or plant used to live in that place, Fact2: Dinosaurs are the most popular fossils., Question: Where are dinosaur remains usually found? (A) mouth of rivers (B) dead organisms (C) where they used to live (D) places they had never been (E) where they visit occasionally (F) places they would avoid (G) sedimentary rocks (H) deposit feeders
[EX A]:
C