Mrs. M is an 82-year-old African-American woman who has had hypertension for many years, which has been treated with diet and exercise. Recently, she has developed congestive heart failure and you feel that she could benefit from a antihypertensive agent. What class of medications would be best for her?
A. Angiotensin receptor II blocker
B. Diuretics
C. Beta-blockers
D. Calcium channel blockers