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 of the following would have best aided a vessel at sea in crossing the sea in the 18th century? (A) A radar system (B) An old soothsayer (C) An experienced navigator (D) A crow's nest
Example Output: C

Example Input: if a person wanted to hunt down some deer, which of these would be the wrong place to visit? (A) the local hunting reservation (B) a known national reservation (C) an uncharted wilderness region (D) a natural unregulated forest
Example Output: B

Example Input: Which relationship is true? (A) birds have warm blood; snakes have warm blood (B) birds have hot blood; snakes have cold blood (C) snakes and birds have the same type of blood (D) birds have cold blood; snakes have warm blood
Example Output:
B