This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: All India exam, Subject name: Anatomy
[{'content': 'Which of the following moves rapidly across the membrane? \nSelect and explain. \nA. CO2, B. Water, C. Glucose, D. Urea', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Hydrophobic molecules move rapidly across the membrane', 'role': 'assistant'}]