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").

[Q]: You can find ferrous metals in (A) Grass (B) Vehicle scraps (C) Wood (D) Glass
[A]: B


[Q]: A tone is made when a hammer makes contact with (A) a waterfall (B) air (C) an solid object (D) a log
[A]: C


[Q]: Glaciers doing what has a negative impact on the glacial environment? (A) liquifying (B) growing (C) freezing (D) cooling
[A]:
A