Definition: 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 phase of the Moon occurs after a waxing gibbous?  
 (A) waning gibbous (B) waxing crescent (C) full moon (D) new moon
Output:
C
Definition: 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 phase of the Moon occurs after a waxing gibbous?  
 (A) waning gibbous (B) waxing crescent (C) full moon (D) new moon
Output:
user
C
assistant
Definition: 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 phase of the Moon occurs after a waxing gibbous?  
 (A) waning gibbous (B) waxing crescent (C) full moon (D) new moon
Output:
C