Patient with end stage renal disease

Patient with end stage renal disease, not having urine output and peripheral edema. Which antihypertensive is safe?

a)aliskiren

b)amlodipine

c)chlorthalidone

d)Prazosin

Amlo?

The answer given is Prazosin. But I thought here we want to break RAS cycle so if ACEI or ARB are not in option then we must consider Aliskiren.