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': 'Lipids are- \nSelect and explain. \nA. Esters of fatty acids with alcohol esters, B. Esters of fatty acid other than alcohol, C. Both, D. None', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Lipids are esters of fatty acids with alcohol esters.', 'role': 'assistant'}]