In this task, you are given a multiple-choice question and you have to pick the correct option. Answer with option indexes (i.e., "A", "B", "C", and "D").

[EX Q]: You can eventually obtain water from a lake even if it's (A) frozen (B) gone (C) evaporated (D) dry
[EX A]: A

[EX Q]: the mantle is (A) a level of our planet (B) the planet closest to ours (C) a kind of rock found on Earth (D) the deepest part of our planet
[EX A]: A

[EX Q]: A balloon is filled with Helium, and then is opened and pressed up to someone's mouth to make a voice high, why does it do this? (A) gas fills the new area (B) gas easily is dispersed (C) gas moves around freely (D) gas is lighter than air
[EX A]:
A