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: Organisms with only one cell (A) are prohibited from specializing (B) can freely specialize openly (C) are unsure what specializing is (D) learn how to specialize

Output: A


Input: Consider Input: Which of the following has a population of zero? (A) Merriam's elk (B) bison (C) llama (D) whooping crane

Output: A


Input: Consider Input: Which location does not get snow in the winter? (A) San Bernardino (B) Sault St. Marie (C) St. Paul (D) St. Louis


Output: A