This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Non communicable diseases, Subject name: Social & Preventive Medicine
[{'content': 'Giving Benzathine penicillin in RHD is a type of - \nSelect and explain. \nA. Primary prevention, B. Secondary prevention, C. Teiary prevention, D. Primordial prevention', 'role': 'user'}, {'content': "Answer: B \nExplanation: park's textbook of preventive and social medicine 23rd edition. *in children :Im injection of benzyl pencillin 600000 units. *in adult :1.2 million units. *this must be continued for 5 years or until the child reaches 18 years.", 'role': 'assistant'}]