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: ENT
[{'content': 'Most common salivary gland to develop stones \nSelect and explain. \nA. Submandibular, B. Sublingual, C. Parotid, D. Lacrimal', 'role': 'user'}, {'content': 'Answer: A \nExplanation: None', 'role': 'assistant'}]