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: Physiology
[{'content': "Which of the following membrane has the highest protein content per gram tissue: \nSelect and explain. \nA. Inner mitochondria' membrane, B. Outer mitochondrial membrane, C. Plasma membrane, D. Myelin sheath", 'role': 'user'}, {'content': 'Answer: A \nExplanation: A i.e. Inner mitochondrial membrane', 'role': 'assistant'}]