This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Renal Tubular And Obstructive Disorders, Subject name: Pediatrics
The treatment of choice for primary grade V VUR involving both kidneys in a 6 month old boy is: 
Select and explain. 
A. Antibiotic prophylaxis, B. Ureteric implantation, C. Cystoscopy followed by subureteric injection of Teflon, D. Bilateral ureterostomies
A: Antibiotic prophylaxis
Answer: A: Antibiotic prophylaxis 
Explanation: Treatment of VUR: 1. Continuous antibiotic prophylaxis: Age < 1 year Grade 3-5 VUR with h/o febrile UTI Associated bowel bladder dysfunction 2. Surgery- break through UTI despite on continuous antibiotic prophylaxis