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]: A thing which moves very little over quite a lot of time is a (A) pack of wolves (B) racing horses (C) falling rocks (D) giant ice brick
[EX A]: D

[EX Q]: An example of an acquired characteristic is (A) the thickness of a horse's mane (B) the length of a horse's mane (C) the number of legs a horse has (D) the color of a horse's mane
[EX A]: B

[EX Q]: Magnets in ear pieces convert sound waves into (A) ear aches (B) radio stations (C) Brain cancer (D) direct current
[EX A]:
D