This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Dental
[{'content': 'Student- test is used as \nSelect and explain. \nA. Parametric test based on variance, B. Non-Parametric test based on variance, C. Parametric test based on average, D. Nun-Parametric test based on average', 'role': 'user'}, {'content': 'Answer: C \nExplanation: None', 'role': 'assistant'}]