Khuyen Nguyen, a 62-year-old female, visits her primary care physician. Her blood pressure is 180/90. She has a history of heart failure for which she takes a diuretic along with digoxin 0.125mg every day. She is diagnosed with hypertension at today’s visit. When the physician leaves the examination room, Khuyen has many questions for the medical assistant about hypertension therapy.The health care professional should also encourage Khuyen to include foods in her diet that are rich in: a. Phosphorus. b. Sodium. c. Potassium. d. Magnesium.