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': 'Most important risk factor for invasive aspergillosis are \nSelect and explain. \nA. Profound neutropenia, B. Tuberculosis, C. Glucocorticoid use, D. Antitumor necrosis factor therapy', 'role': 'user'}, {'content': 'Answer: C \nExplanation: All of above are risk factors. But most important is Glucocorticoid use.', 'role': 'assistant'}]