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
Nail and half nail sign, seen in uremia is - 
Select and explain. 
A. Due to melanin deposition, B. Increased capillary density at the distal half of nails, C. Hypoproteinemia, D. Circulating toxin
B: Increased capillary density at the distal half of nails
Answer: B: Increased capillary density at the distal half of nails 
Explanation: None