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: Biochemistry
[{'content': 'In Familial hypercholesterolemia there is \nSelect and explain. \nA. LDL receptor, B. Apo protein A, C. Apo protein C, D. Lipoprotein lipase', 'role': 'user'}, {'content': 'Answer: A \nExplanation: A i.e. LDL receptor', 'role': 'assistant'}]