Definition: 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: Which is the best way a science student can help to maintain laboratory equipment?
(A) perform investigations using only new materials (B) throw away glass items after investigations are complete (C) clean up all materials and workspaces after investigations (D) eat in the laboratory only after investigations are complete
Output:
C