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: \nSelect and explain. \nA. Has wide capsule, B. Dimorphic fungi, C. A Protozoal agent, D. Amphoricin-B resistant', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Dimorphic fungi', 'role': 'assistant'}]