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: Social & Preventive Medicine
[{'content': 'Dose of rabies immunoglobulin for post-exposure prophylaxis ? \nSelect and explain. \nA. 10 IU/kg, B. 20 IU/kg, C. 30 IU/kg, D. 40 1U/kg', 'role': 'user'}, {'content': "Answer: B \nExplanation: Ans. is 'b' i.e., 20 IU/kg Dose of rabies immunoglobulin (equine immunoglobulin) - 20 IU/kg body weight. Dose of F (ab)2 products - 40 IU/kg body weight.", 'role': 'assistant'}]