input: The following are multiple choice questions (with answers) about medical knowledge.   **Question:** A 2 year old boy has vitamin D refractory rickets. Investigations show serum calcium 9 mg/dl. Phosphate 2.4 mg dl, alkaline phosphate 1040 parathyroid hormone and bicarbonate levels are normal. The most probable diagnosis is –   (A) Distal renal tubular acidosis   (B) Hypophosphatemic rickets.   (C) Vitamin D dependent rickets   (D) Proximal renal tubular acidosis
output: ['(B) Hypophosphatemic rickets. <> answer', 'The following are multiple choice questions (with answers) about medical knowledge. <> instruction', '(A) Distal renal tubular acidosis  (B) Hypophosphatemic rickets.  (C) Vitamin D dependent rickets  (D) Proximal renal tubular acidosis <> possible answers', '  A 2 year old boy has vitamin D refractory rickets. Investigations show serum calcium 9 mg/dl. Phosphate 2.4 mg dl, alkaline phosphate 1040 parathyroid hormone and bicarbonate levels are normal. The most probable diagnosis is – <> context']