You have a web application hosted on AWS VPC with a single EC2 instance with Auto Scaling enabled. You have also assigned elastic IP address to the EC2 instance. When you access the elastic IP address, you are able to successfully connect to your web application. You decided to route requests to your application from a custom domain through Route 53. You have performed the setup on Route 53. However, when you access your custom domain name from internet, you get “Server Not Found” error. Which of the following could be a reason?

Answer options:

A.Route 53 service is for internal application routing. It does not support routing traffic from internet.
B.You must configure elastic load balancer in order to use Route 53 for web application hosting.
C.IP address configured in Route 53 DNS record set might be incorrect.
D.The resource on EC2 instance that you`re routing traffic to is unavailable.

Answer: C

Option A and B are not valid statements.
 Option C is correct.
 Although option D looks correct, the question states the connection to web application was successful when connected through elastic IP address. So this option is not the cause of failure.