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: Medicine
Salt losing nephropathy - 
Select and explain. 
A. Interstitial nephritis, B. Lupus nephritis, C. Amyloidosis, D. Post-streptococcal GN
A: Interstitial nephritis
Answer: A: Interstitial nephritis 
Explanation: None