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': 'The following are true of kala-azar except - \nSelect and explain. \nA. Persistent hypergammaglobulinemia, B. Pancytopenia, C. Cancrum oris can occur, D. Full treatment prevents post kala-azar dermal leishmaniasis', 'role': 'user'}, {'content': 'Answer: D \nExplanation: None', 'role': 'assistant'}]