This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Metabolism of lipid, Subject name: Biochemistry
[{'content': 'Cholesterol is a predominant lipid in \nSelect and explain. \nA. LDL and HDL, B. HDL and VLDL, C. Chylomicron and VLDL, D. IDL and HDL', 'role': 'user'}, {'content': 'Answer: A \nExplanation: LDL and HDL lipoproteins are the major carrier of cholesterol . Reference: Harpers illustrated biochemistry 31st edition page 248', 'role': 'assistant'}]