This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: General physiology, Subject name: Physiology
[{'content': 'A protein to lipid ratio on a weight basis of 1:1 is present in the membrane of which organelle? \nSelect and explain. \nA. Inner mitochondrial membrane, B. Myelin, C. Plasma membrane of human erythrocyte, D. Sarcoplasmic reticulum', 'role': 'user'}, {'content': 'Answer: C \nExplanation: None', 'role': 'assistant'}]