A 60-year-old woman is found to have elevated serum calcium and suppressed parathyroid hormone (PTH) levels. She also has raised alkaline phosphatase and bone pain. What is the most likely diagnosis?APrimary hyperparathyroidismBSecondary hyperparathyroidismCTertiary hyperparathyroidismDMalignancy-related hypercalcaemiaEOsteoporosisCheck my answer