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: Radiology
Nephrogram phase of IVP is because of dye in: 
Select and explain. 
A. Proximal convoluted tubules, B. Renal pelvis, C. Nephron, D. Collecting tubules
A: Proximal convoluted tubules
Answer: A: Proximal convoluted tubules 
Explanation: Ans. Proximal convoluted tubules