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: Which can be used to pass information from one person to another? (A) an invention by Marconi (B) an invention by Newton (C) an invention by McCormick (D) an invention by Pasteur
Example Output: A

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: Revolution happens when (A) Earth orbits the moon (B) Mars orbits the sun (C) the sun orbits the Earth (D) the Earth's moon orbits Mars
Example Output:
B