8 yr old child with BP 180/100 mmhg,urea 90,creatinine 5.3,urinalysis shows 15-20 pus cells,1-2 RBC,protein 1and has no significant past h/o of similar complaint.Most likely diagnosis is -

• A. Idiopathic RPGN
• B. Chronic interstitial nephritis with VUR
• C. Post infective glomerulonephritis
• D. Accelerated hypertension with AFR