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': 'Drug of choice for carriers of diphtheria is \nSelect and explain. \nA. Penicillin G, B. Septran, C. Tetracycline, D. Erythromycin', 'role': 'user'}, {'content': "Answer: D \nExplanation: Corynebacterium diphtheriae is sensitive to Penicillin and can be cleared from the throat within a few days by Penicillin treatment. Erythromycin is more active than Penicillin in the treatment of carriers. Reference: Textbook of Microbiology; Anathanarayan and panicker's; 10th edition; Page no: 245", 'role': 'assistant'}]