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': 'Actinomycetoma is caused by: \nSelect and explain. \nA. Bacteria, B. Virus, C. Fungus, D. Protozoa', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Bacteria', 'role': 'assistant'}]