A nurse is caring for a 45-year-old male client who is prescribed with insulin and glucagon (GlucaGen) for diabetes. The client is unsure why he is prescribed with glucagon (GlucaGen). Which of the following is a therapeutic use for glucagon (GlucaGen)?

A. Glucagon is not used to treat thyroid cancer; treatments for thyroid cancer often include radioactive iodine therapy or surgery. B. Glucagon is used to treat severe hypoglycemia in diabetic patients when they are unable to take oral glucose. It works by stimulating the liver to release stored glucose into the bloodstream, rapidly raising blood sugar levels. C. Diabetes insipidus involves a deficiency of antidiuretic hormone or kidney insensitivity to it and is treated with desmopressin or adequate hydration, not glucagon. D. Type 2 diabetes mellitus is typically managed with lifestyle changes, oral antidiabetic agents, or insulin. Glucagon is not used for routine management but is reserved for severe hypoglycemia emergencies.