Instructions: You are given a science question (easy-level) and four answer options (associated with "A", "B", "C", "D"). Your task is to find the correct answer based on scientific facts, knowledge, and reasoning. Do not generate anything else apart from one of the following characters: 'A', 'B, 'C', 'D'. There is only one correct answer for each question.
Input: Conjugation in a paramecium differs from sexual reproduction in volvox because conjugation
(A) results in two genetically identical cells. (B) requires specialized gonidia cells. (C) forms haploid male and female gametes. (D) takes place between specialized cells.
Output:
A