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
Which of the following studies have given coronary risk factor and their relative impoance- 
Select and explain. 
A. Framingham study, B. noh kerala study, C. Standford study, D. MONICA STUDY
A: Framingham study
Answer: A: Framingham study 
Explanation: 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.