This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Nephrotic and Nephritic syndrome, Subject name: Medicine
[{'content': 'Salt losing nephritis is: \nSelect and explain. \nA. Interstitial nephritis, B. Polycystic Kidney, C. Lupus nephritis, D. R.P.G.N', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Most of the salt excreted from the body is reabsorbed proximal convoluted tubule and hence in interstitial nephritis where the tubule is involved, the salt loss will be seen.', 'role': 'assistant'}]