A 15 days old baby presented to the emergency department with history of seizures.Blood tests revealed serum calcium of 5mg/dl,serum phosphate of 9mg/dl and an intact PTH of 30pg/ml(Normal Intact PTH=10-60pg/ml).Which of the following is the most likely diagnosis:

• A. Hypoparathyroidism
• B. Pseudohypoparathyroidism
• C. Hypoxic Ischaemic Encephalopathy
• D. Vitamin D Deficiency