Instructions: You are given a science question (hard-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: Which source of data about Nevada resources is likely to be most current and reliable?  
 (A) a science encyclopedia (B) an article in a local newspaper (C) a government-maintained website (D) a student's classroom presentation
Output:
C