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': 'Rate at which plasma is cleared of solute free water is known as: \nSelect and explain. \nA. Free water clearance, B. Bound water clearance, C. Water clearance rate, D. Solute level clearance', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Free Water Clearance: \n\nIs regulated by ADH. \nIt is the rate at which plasma is cleared of solute free water.\n\n\u200bFree-water clearance (CH20) is calculated as the difference between water excretion (urine flow rate) and osmolar clearance:', 'role': 'assistant'}]