This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: General anatomy, Subject name: Anatomy
[{'content': 'Serous demilunes is present in \nSelect and explain. \nA. Serous glands, B. Mucous glands, C. Mixed glands, D. All salivary glands', 'role': 'user'}, {'content': 'Answer: C \nExplanation: When the gland has this demilunar structure, it produces both serous and mucous secretions, and is thus classified as "mixed".', 'role': 'assistant'}]