This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: General anatomy, Subject name: Anatomy
[{'content': 'The following is not a function of rough endoplasmic reticulum: \nSelect and explain. \nA. Protein synthesis, B. Protein folding, C. Degradation of miss folded proteins, D. Steroid synthesis', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Rough endoplasmic reticulum is associated with: Protein synthesis Protein folding Degradation of miss folded proteins Steroid synthesis is function of smooth endoplasmic reticulum. Ref:Guyton and Hall textbook of medical physiology 12th edition,page number: 10,11,12', 'role': 'assistant'}]