This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Unknown
[{'content': 'All are the risk factors for coronary artery disease except: \nSelect and explain. \nA. LDL, B. HDL, C. Smoking, D. Hypertension', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Some important risk factors for Atherosclerosis: Fixed\n\nFamily history\nAge\nSex (male) Modifiable\nSmoking\nHaemostatic variables\nHypertension\nSedentary life styles\nLipid disorders\nObesity\nDM\nDiet\n\nAtherosclerotic vascular disease may manifest as coronary heart disease, cerebrovascular disease or peripheral vascular disease. Occult coronary artery disease is common in those who present with other forms of atherosclerotic vascular disease. So risk factors for atherosclerosis is also are the risk factors for CAD.', 'role': 'assistant'}]