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: Microbiology
[{'content': 'Which of the following is not true of Actinomycosis- \nSelect and explain. \nA. Demonstration of filaments, B. Caused by actinomyces israelii, C. Organism cannot be cultured, D. Sulphur granules in pus', 'role': 'user'}, {'content': 'Answer: C \nExplanation: None', 'role': 'assistant'}]