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': 'Risk modification is CAD is? \nSelect and explain. \nA. Primordial prevetion, B. Primary prevetion, C. Secondary prevetion, D. Teiary prevetion', 'role': 'user'}, {'content': "Answer: A \nExplanation: park's text book of preventive and social medicine 23rd edition . dega noval approach to primary preventiom of CHD is primodial prevention . degit prevents the emergence and spread of CHD risk factors and life styles that have not yet appeared or become endemic .", 'role': 'assistant'}]