This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Fluids and Electrolyte Imbalance, Subject name: Medicine
Hyperphosphatemia is treated by? 
Select and explain. 
A. Calcitonin, B. Sevelamer, C. Magnesium hydroxide, D. Diuretics
B: Sevelamer
Answer: B: Sevelamer 
Explanation: Sevelmer is a phosphate binder; decrease serum phosphate concentration without changing calcium, aluminium, or bicarbonate concentration