Which of the below mentioned AWS services helps the user achieve this for ELB?

A user has configured ELB with three instances. The user wants to achieve High Availability as well as redundancy with ELB.

Which of the below mentioned AWS services helps the user achieve this for ELB?
A . Route 53
B . AWS Mechanical Turk
C . Auto Scaling
D . AWS EMR

Answer: A

Explanation:

The user can provide high availability and redundancy for applications running behind Elastic Load Balancer by enabling the Amazon Route 53 Domain Name System (DNS. failover for the load balancers. Amazon Route 53 is a DNS service that provides reliable routing to the user’s infrastructure.