This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Haematology, Subject name: Pathology
Which of the metabolic abnormality is seen in multiple myeloma?- 
Select and explain. 
A. Hyponatremia, B. Hypokalemia, C. Hypercalcemia, D. Hyperphosphatemia
C: Hypercalcemia
Answer: C: Hypercalcemia 
Explanation: Multiple myeloma is a plasma cell neoplasm commonly associated with lytic bone lesions, hypercalcemia, renal failure and acquired immune abnormalities. Bone resorption leads to hypercalcemia. Reference : Robbins and Cotran Pathologic basis of disease.South Asia Edition volume 1.page no. 599