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': 'Glucose diffusion in RBC by ? \nSelect and explain. \nA. GLUT I, B. GLUT 2, C. GLUT 3, D. GLUT 4', 'role': 'user'}, {'content': "Answer: A \nExplanation: Ans. is 'a' i.e., GLUT 1", 'role': 'assistant'}]