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': 'Which of the following studies have given coronary risk factor and their relative impoance- \nSelect and explain. \nA. Framingham study, B. noh kerala study, C. Standford study, D. MONICA STUDY', 'role': 'user'}, {'content': 'Answer: A \nExplanation: since 1951, one of the best known large prospective studies the Framingham study,has played a major role in establishing the nature of CAD risk factors and their relative impoance.', 'role': 'assistant'}]