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': "Orbital mucormycosis is a complication of - \nSelect and explain. \nA. AIDS, B. Steroid therapy, C. Cushing's disease, D. Diabetic ketoacidosis", 'role': 'user'}, {'content': 'Answer: D \nExplanation: None', 'role': 'assistant'}]