You Are Designing Internet Connectivity for Your VPC

You are designing Internet connectivity for your VPC. The Web servers must be available on the Internet. The application must have a highly available architecture. Which alternatives should you consider? (Choose 2)

A) Configure a NAT instance in your VPC. Create a default route via the NAT instance and associate it with all subnets. Configure a DNS A record that points to the NAT instance public IP address.
B) Configure a CloudFront distribution and configure the origin to point to the private IP addresses of your Web servers. Configure a Route53 CNAME record to your CloudFront distribution.
C) Place all your web servers behind ELB. Configure a Route53 CNMIE to point to the ELB DNS name.
D) Assign EIPs to all web servers. Configure a Route53 record set with all EIPs, with health checks and DNS failover.
E) Configure ELB with an EIP. Place all your Web servers behind ELB. Configure a Route53 A record that points to the EIP.