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': 'HDL is increased by \nSelect and explain. \nA. Exercise, B. 400 mg Vit. E daily, C. Aspirin, D. DHEA', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Exercise\n\nAerobic exercise increases the level of HDL cholesterol.', 'role': 'assistant'}]