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: Pediatrics
The most common cause of secondary hypertension in children is – 
Select and explain. 
A. Renal artery stenosis, B. Renal disease, C. Systemic Vasculitis, D. Adrenal Tumours
B: Renal disease
Answer: B: Renal disease 
Explanation: None