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: Pathology
[{'content': 'A bacterial disease with oral manifestations is \nSelect and explain. \nA. Herpes, B. measles, C. Diphtheria, D. Leishmaniasis', 'role': 'user'}, {'content': 'Answer: C \nExplanation: None', 'role': 'assistant'}]