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': 'Halting a disease at its incipient stages and preventing its complications is known as: \nSelect and explain. \nA. Primordial prevention, B. Primary prevention, C. Secondary prevention, D. Tertiary prevention', 'role': 'user'}, {'content': 'Answer: C \nExplanation: None', 'role': 'assistant'}]