This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Corynebacterium, Subject name: Microbiology
[{'content': 'Most common variety of diphtheria is: \nSelect and explain. \nA. Nasal, B. Laryngeal, C. Faucial, D. Otitic', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Ans: c (Faucial) Ref: Ananthanarayan, 7th ed, p. 234Types of diphtheria are: NasalLaryngealFaucialOtiticConjunctivalGenitalCutaneousMost common variety is faucialMost dangerous variety is laryngeal', 'role': 'assistant'}]