This is the gross appearance of a parathyroid carcinoma. The serum calcium can be quite high. Note the large size and irregular cut surface. These carcinomas have a tendency to invade surrounding tissues in the neck, complicating their removal.

Which of the following is the most efficacious emergent therapy to prevent fatal cardiac dysrhythmia in this condition?

A Bisphosphonate

B Low calcium diet

A Loop diuretic

B Saline infusion