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").

Input: Consider Input: What is an example of reproduction occurring in adulthood? (A) humans are unable to reproduce until they are legal adults (B) eggs are unable to be fertilized before they are dropped (C) dogs are unable to have puppies until they are two years old (D) cats are unable to produce offspring until they are sexually mature

Output: D


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

Output: A


Input: Consider Input: Crickets live in forests in (A) Rotting Trees (B) In the desert (C) In the snow (D) The sunlight


Output: A