This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Fluids and Electrolyte Imbalance, Subject name: Medicine
[{'content': 'Trans-tubular potassium gradient (T.T.K.G) in hypokalemia is? \nSelect and explain. \nA. <3-4, B. >6-7, C. >9-10, D. >10-15', 'role': 'user'}, {'content': 'Answer: A \nExplanation: The expected values of the Trans-tubular potassium gradient (T.T.K.G) are <3-4 in the presence of hypokalemia and >6-7 in the presence of hyperkalemia. TTKG is measured as follows:', 'role': 'assistant'}]