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: If someone wants to use a natural gas in order to assist something necessary, they can (A) use it to bathe in (B) eat it to die quickly (C) freeze it to make ice cubes (D) ignite it to warm their body
Example Output: 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: If Earth has poles that are magnetic (A) needles will glow in the dark because of them (B) needles will stab them (C) some poles will be radioactive (D) needles aim that way
Example Output:
D