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
Muehrcke lines in nails are seen in 
Select and explain. 
A. Nephrotic syndrome, B. Barer syndrome, C. Nail patella syndrome, D. Acute tubular necrosis
A: Nephrotic syndrome
Answer: A: Nephrotic syndrome 
Explanation: Ans. is 'a' i.e., Nephrotic syndrome