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: Caffeine is a central nervous system stimulant., Fact2: Cocaine is a stimulant and increases the user's heart rate and blood pressure., Question: What does caffeine do? (A) Increase fame (B) increases a body's strength (C) Release energy (D) Increase user's heart rate (E) Transfers energy (F) decrease stamina (G) Increase intelligence (H) Increase wealth
[A]: D


[Q]: Fact1: lungs are used for breathing air by land animals, Fact2: Elephants are the largest animals on land., Question: What uses lungs for breathing air? (A) rocks (B) some mammals (C) Frogs (D) monotremes (E) humans (F) bacteria (G) elephants (H) oak trees
[A]: G


[Q]: Fact1: Echinoderms lack a centralized nervous system., Fact2: Echinoderms are represented by the starfish., Question: What kind of animal doesn't have a centralized nervous system? (A) dog (B) mammals (C) cows (D) bird (E) human (F) elephants (G) starfish (H) a fish
[A]:
G