A nurse is caring for a client who has hypoparathyroidism. Which of the following findings should indicate to the nurse that the treatment is effective?

A. Potassium level is within normal range but is not directly related to hypoparathyroidism treatment effectiveness. B. Sodium level is normal but also not related to hypoparathyroidism management. C. Calcium 9.6 mg/dL is within the normal range and indicates that the treatment for hypoparathyroidism (which often involves calcium supplementation) is effective in maintaining appropriate calcium levels. D. Glucose level is normal but unrelated to hypoparathyroidism treatment outcomes.