A 6 yrs old girl presents with Recurrent E.coli infection in urine.Ultrasound of abdomen shows Hydroureter and Hydronephrosis.Micturating cysto-urethrogam shows filling defect in urinary bladder.The likely diagnosis is:

• A. Duplication of Ureter
• B. Ureterocele
• C. Sacrococcygeal Teratoma
• D. Vesicoureteric Reflux-grade II