This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: parasitology, Subject name: Microbiology
[{'content': 'An examination of sputum for a suspected case of fungal infection may reveal hyphae in which of the following \nSelect and explain. \nA. Aspergillosis, B. Sporotrichosis, C. Histoplasmosis, D. Cryptococcosis', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Cryptococcosis, histoplasmosis, and sporotrichosis are all caused by dimorphic fungi. At 37oC (98oF), the yeast form predominates. Aspergillosis, on the other hand, is caused by an organism that produces only hyphae (no-yeast component). Ref:- Baveja textbook of Microbiology', 'role': 'assistant'}]