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': "Wharton's duct drains the: \nSelect and explain. \nA. Pancreas, B. Parotid, C. Lacrimal gland, D. Submandibular gland", 'role': 'user'}, {'content': 'Answer: D \nExplanation: None', 'role': 'assistant'}]