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: Medicine
[{'content': 'All of the following statements about Pneumocystis Jiroveci are true except - \nSelect and explain. \nA. Usually associated with CMV infection, B. May be associated with Pneumatocele, C. Usually diagnosed by sputum examination, D. Causes disease only in the immunocompromised host', 'role': 'user'}, {'content': 'Answer: A \nExplanation: None', 'role': 'assistant'}]