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").

Example Input: The objects the push up through the deep black stuff that covers the ground gives us an item that is inserted in a sweet treat with a flaky bottom of flour  that can be eaten with ice cream on top? (A) Leafs (B) Eggs (C) Milk (D) Fruit
Example Output: D

Example Input: harming an animal species causes that animal 's population to do what? (A) explode (B) rise (C) plummet (D) burst
Example Output: C

Example Input: Sending electricity through what causes electric current to flow through it? (A) ground (B) water (C) air (D) copper
Example Output:
D