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': 'Ideal dose of Diptheria antitoxin given for treatment is \nSelect and explain. \nA. 10,000 to 1,00,000 units, B. 10,000 to 2,00,000 units, C. 20,000 to 1,00,000 units, D. 20,000 to 2,00,000 units', 'role': 'user'}, {'content': "Answer: C \nExplanation: * Specific treatment of diphtheria consists of antitoxic and antibiotic therapy. * Antitoxin should be given immediately when diphtheria is suspected, as the fatality rate increases with delay in staing antitoxic treatment. * Antibiotic treatment only supplements and does not replace antitoxic therapy. * Diphtheria antitoxin should be given in respiratory diphtheria - 20,000 to 1,00,000 units. Ref:- Ananthanarayan and Paniker's Textbook of Microbiology 10th ed; Pg num:- 245", 'role': 'assistant'}]