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': 'Which of the following is not an intralobular duct: \nSelect and explain. \nA. Intercalated ducts., B. Striated ducts., C. Excretory ducts., D. All of the above', 'role': 'user'}, {'content': 'Answer: C \nExplanation: There are two types of intralobular ducts - the intercalated and striated ducts. The excretory ducts are interlobular.', 'role': 'assistant'}]