This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Concept of health and disease, Subject name: Social & Preventive Medicine
[{'content': 'Which of the following is not a primary prevention strategy \nSelect and explain. \nA. Breast self exam, B. Control of tobacco, C. Radiation protection, D. Cancer education', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Breast self exam is a screening test and is a pa of secondary prevention Ref : Park&;s Textbook of Preventive and Social Medicine; 23rd edition - Pgno. 42', 'role': 'assistant'}]