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': 'Saliva is secreted by \nSelect and explain. \nA. Major salivary glands, B. Minor salivary glands, C. Major & minor salivary glands, D. Parotid gland', 'role': 'user'}, {'content': 'Answer: C \nExplanation: None', 'role': 'assistant'}]