Emily's feet, ankles, and legs are all swollen. Her doctor diagnoses edema and recommends diuretics. However, after a few days she begins vomiting frequently, which was diagnosed as metabolic alkalosis. How can diuretics contribute to metabolic alkalosis?

• A. By decreasing sodium ion reabsorption
• B. By increasing potassium ion excretion
• C. By decreasing chloride ion excretion
• D. By increasing hydrogen ion secretion

Answer: (D)