A 10 year old boy has a fracture of femur.Biochemical evaluation revealed Hb 11.5 gm/dL and ESR 18mm 1st hr.Serum calcium 12.8 mg/dL,serum phosphorus 2.3mg/dL,alkaline phosphate 28KA units and blood urea 32 mg/dL.Which of the following is the most probable diagnosis in his case?

• A. Renal rickets
• B. Nutritional rickets
• C. Skeletal dysplasia
• D. Hyperparathyroidism