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]: Birds sometimes eat what? (A) grass (B) underground crawlers (C) insecticide (D) trees
[EX A]: B

[EX Q]: What is undesirable in a vegetable garden? (A) tomatoes (B) green peppers (C) corn (D) dandelions
[EX A]: D

[EX Q]: John Muir would likely set aside an area for (A) superheroes and villains (B) oaks and chipmunks (C) bankers and politicians (D) cars and boats
[EX A]:
B