This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Bacteriology, Subject name: Microbiology
[{'content': 'The leather term is used for \nSelect and explain. \nA. Anthrax, B. Proteus, C. Diphtheria, D. Neisseria', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Diphtheria was first recognized as a clinical entity by Bretonneau who called it "diphtheria" (from diph-theros, meaning leather). The name is derived from the tough, leathery pseudomembrane formed in the disease. Reference: Textbook of Microbiology; Anathanarayan and panicker\'s; 10th edition; Page no: 239', 'role': 'assistant'}]