Causes of nephrocalcinosis are -: (A) Hyperparathyroidism, (B) T.B. Kidney, (C) Hypercalcemia, (D) All
Answer is D. Ans. is 'a' i.e., Hyperparathyroidism; 'b' i.e., T.B. Kidney; 'c' i.e., Hypercalcemia