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': 'Which of these is a parametric test \nSelect and explain. \nA. T-Test, B. Wilcoxon signed rank Test, C. Mann-Whitney U Test, D. Chi-Square Test', 'role': 'user'}, {'content': 'Answer: A \nExplanation: None', 'role': 'assistant'}]