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: Pathology
[{'content': 'Dilation of the salivary duct secondary to epithelial atrophy as a result of repeated inflammatory or infectious process is \nSelect and explain. \nA. Sialodochitis, B. sialadenitis, C. Sialolithiasis, D. Mucocele', 'role': 'user'}, {'content': 'Answer: A \nExplanation: None', 'role': 'assistant'}]