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: Most amphibians breathe with gills as larvae and with lungs as adults., Fact2: All frogs are amphibians., Question: What do frogs breathe with when they are adults? (A) skin (B) fins (C) lungs (D) oxygen (E) gills (F) air (G) Energy (H) Gases
[A]: C

[Q]: Fact1: a battery converts chemical energy into electrical energy, Fact2: Check the fire alarm's batteries the first of each month., Question: What converts chemical energy into electrical energy? (A) Something in a fire alarm (B) sperm and egg fuse (C) Males and females (D) igniting fuel and oxidiser (E) The bending of a ray of light (F) basic building blocks of life (G) sensory neurons (H) mechanical waves
[A]: A

[Q]: Fact1: Feathers help birds fly and provide insulation., Fact2: To survive the chill, warm-blooded penguins rely on feathers and fat for insulation., Question: Birds do what using the feathers that help them to fly? (A) to move people (B) running and lifting (C) survive the chill (D) during the day (E) Move to another area (F) Earth orbiting the Sun (G) to stay warm (H) supersonic
[A]:
C