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: Who'd be able to see a rose is pink at night? (A) rocks (B) the Rio Grande (C) a beeping sound (D) lemurs
Example Output: D

Example Input: Who is most likely to die of old age? (A) adults (B) children (C) infants (D) reasonable high-school students
Example Output: A

Example Input: migration is when animals travel from the northern most state to Texas during what segment of time? (A) birds (B) spring (C) lake fronts (D) winter
Example Output:
D