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: A good conductor of electricity would be (A) tree (B) coke bottle (C) your finger (D) coke can
Example Output: D

Example Input: an example of converting potential energy to kinetic energy is (A) a resting bird (B) a still rock (C) our own sun (D) cars spinning tires
Example Output: D

Example Input: A thousand new trucks are put on the road carrying produce. As a result (A) distant cities burn down (B) things stay the same (C) distant locations build quarries (D) distant locations have greater produce options
Example Output:
D