This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: General pathology, Subject name: Pathology
[{'content': 'Not a marker for muscle tumor- \nSelect and explain. \nA. Desmin, B. Actin, C. Neurofilament, D. Intermediate filament', 'role': 'user'}, {'content': 'Answer: C \nExplanation: All others except neurofilament are elevated in muscle tumors. Basic Pathology, Robbins. Page no.: 795', 'role': 'assistant'}]