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': "According to Dardick's multicellular theory which type of cells are not responsible for the origin of pleomorphic adenoma: \nSelect and explain. \nA. Intercalated duct reserve cell., B. Myoepithelial cell., C. Excretory duct cell., D. None.", 'role': 'user'}, {'content': 'Answer: C \nExplanation: Dardick’s multicellular theory\nIntercalated duct reserve cell\xa0→ pleomorphic adenoma\nMyoepithelial cell\xa0→ pleomorphic adenoma', 'role': 'assistant'}]