Which of the following conditions most directly predisposes a patient to hyperphosphatemia due to reduced renal excretion?

• A. Hyperthyroidism with elevated calcitonin secretion
• B. Chronic kidney disease with reduced glomerular filtration rate
• C. Excessive dietary calcium intake in a healthy young adult with normal kidneys
• D. Acute pancreatitis causing pancreatic enzyme release

Answer: (B)