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]: Which does light from the sun arrive at in final time length? (A) Uranus (B) Mars (C) Pluto (D) Earth
[EX A]: C

[EX Q]: A shoe seems gold and green at first, then at second glance looks blue and silver. This could be due to (A) interrogation (B) comas (C) refractions (D) cellulite
[EX A]: C

[EX Q]: Invasive plants in an ecosystem often lead to (A) overpopulation (B) rainy weather (C) rashes (D) GMOs
[EX A]:
A