Which statement below is correct in regards to Amazon Route 53?

After deploying a new website for a client on AWS, he asks if you can set it up so that if it fails it can be automatically redirected to a backup website that he has stored on a dedicated server elsewhere. You are wondering whether Amazon Route 53 can do this.

Which statement below is correct in regards to Amazon Route 53?
A . Amazon Route 53 can’t help detect an outage. You need to use another service.
B . Amazon Route 53 can help detect an outage of your website and redirect your end users to alternate locations.
C . Amazon Route 53 can help detect an outage of your website but can’t redirect your end users to alternate locations.
D . Amazon Route 53 can’t help detect an outage of your website, but can redirect your end users to alternate locations.

Answer: B

Explanation:

With DNS Failover, Amazon Route 53 can help detect an outage of your website and redirect your end users to alternate locations where your application is operating properly.

Reference: http://aws.amazon.com/about-aws/whats-new/2013/02/11/announcing-dns-failover-for-route-53/