The following are multiple choice questions (with answers) about medical knowledge.   **Question:** A 2 month old girl has failure to thrive, polyuria and medullary nephrocalcinosis affecting both kidneys. Investigations show blood pH 7.48, bicarbonate 25 mEq/l, potassium 2 mEq/l, sodium 126 mEq/l and chloride 88 mEq/l. The most likely diagnosis is -   (A) Distal renal tubular acidosis   (B) Primary hyperaldosteronism   (C) Bartter syndrome   (D) Pseudohypoaldosteronism
['(C) Bartter syndrome <> answer', 'The following are multiple choice questions (with answers) about medical knowledge. <> instruction', '(A) Distal renal tubular acidosis \n (B) Primary hyperaldosteronism \n (C) Bartter syndrome \n (D) Pseudohypoaldosteronism <> possible answers', '  A 2 month old girl has failure to thrive, polyuria and medullary nephrocalcinosis affecting both kidneys. Investigations show blood pH 7.48, bicarbonate 25 mEq/l, potassium 2 mEq/l, sodium 126 mEq/l and chloride 88 mEq/l. The most likely diagnosis is - <> context@']