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': 'The causative organism in Madura Mycosis Mycetoma is - \nSelect and explain. \nA. Nocardia, B. Dimorphic fungus, C. Aspergillus, D. Dermatophytes', 'role': 'user'}, {'content': 'Answer: A \nExplanation: None', 'role': 'assistant'}]