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 membrane rich in protein is: \nSelect and explain. \nA. Inner mitochondrial membrane, B. Outer mitochondrial membrane, C. Endoplasmic reticulum, D. All', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Of all the membranes inner mitochondrial membrane is rich in protein content', 'role': 'assistant'}]