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': 'Which organism cannot be cultured ? \nSelect and explain. \nA. Klebsiella rhinoscleromatis, B. Klebsiella ozaenae, C. Klebsiella granulomatis, D. Pneumocystis jiroveci', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Ans. is \'d\' i.e., Pneumocytstis jiroveci "The life cycle of pneumocystis probably involves sexual and asexual reproduction, although definitive proof awaits the development of a reliable culture system". - Harrison "Rhinosporidium seeberi has not been cultivated in media". - Ananthnarayan.', 'role': 'assistant'}]