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': 'Optimum orthodontic force should not exceed the: \nSelect and explain. \nA. Arterial blood pressure, B. Venous blood pressure, C. Capillary blood pressure, D. Masticatory pressure', 'role': 'user'}, {'content': 'Answer: C \nExplanation: None', 'role': 'assistant'}]