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': 'Histoplasma capsulatum is a: \nSelect and explain. \nA. Protozoa, B. Dimorphic fungus, C. Amphotercin resistant, D. Capsulated', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Dimorphic fungus', 'role': 'assistant'}]