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': 'Which of the following is a squamous cell carcinoma marker? \nSelect and explain. \nA. Vimentin, B. Dermin, C. Cytokeratin, D. Glial fibrillary acid protein', 'role': 'user'}, {'content': 'Answer: C \nExplanation: The presence of cytokeratins detected by immunohistochemistry, points to an epithelial origin (Carcinoma) where as dermin is specific for neoplasm of muscle cell origin.', 'role': 'assistant'}]