You have two public applications on different domains that use two front-end servers and two back-end servers each. You wish to achieve high availability for both applications. What two options should you configure? (Choose two.)
A. Route 53: 2 public zones and 2 private zones.
B. Route 53: 2 public zones and 1 private zone.
C. 3 load balancers: 2 public and 1 internal.
D. 4 load balancers: 2 public and 2 internal.
