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: Polar bears are best suited for (A) colder places (B) hotter regions (C) Jupiter's polar caps (D) northern desert regions
Example Output: A

Example Input: heat and pressure change the remains of what into natural gas? (A) leaves (B) cans (C) books (D) cars
Example Output: A

Example Input: A person puts a potato in some embers on the edge of a campfire. The embers are (A) hording thermal energy for later (B) taking in the warmth (C) meant for staying cool (D) doing a thermal release
Example Output:
D