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': 'True about diphtheria is - \nSelect and explain. \nA. Cause cranial nerve palsies in 2nd & 3rd week, B. Treatment with erythromycin, C. It is gram negative organism, D. Passive immunization is harmful and should not be tried', 'role': 'user'}, {'content': "Answer: B \nExplanation: Ans. is 'b' i.e., Treatment with erythromycin", 'role': 'assistant'}]