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': 'Filamentous fungi that infect the only superficial keratinized tissues is known as: \nSelect and explain. \nA. Dermatophyte, B. Dimorphic fungi., C. Mucormycosis, D. Candida', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Dermatophytes causes ringworm', 'role': 'assistant'}]