This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: mycology, Subject name: Microbiology
[{'content': 'A patient made a self-diagnosis of athlete&;s foot (tinea pedis) and began using a product adveised on television. The condition improved but did not clear and then the patient showed himself to a Dermatologist. A skin was sent to the laboratory for culture, including culture for fungi. The fungal culture yielded a slow growing colony, which produced a few small microconidia. This is consistent with isolation of a dermatophyte of the genera \nSelect and explain. \nA. Trichophyton, B. Microsporum, C. Epidermophyton, D. Trichosporon', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Athletes foot - caused by Trichophyton rubrum and epidermophyton floccosum. Genus trichophyton - microconidia. Genus Microsporum and epidermophyton - macroconidia. Reference: Textbook of Microbiology; Baveja; 4th edition .', 'role': 'assistant'}]