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': 'Which of the following is not the function of smooth endoplasmic reticulum? \nSelect and explain. \nA. Lipid synthesis, B. Protein synthesis, C. Metabolism of drugs, D. Supply of calcium for cellular functions', 'role': 'user'}, {'content': 'Answer: B \nExplanation: None', 'role': 'assistant'}]