Which options are probable causes of this behavior?

You have a load balancer configured for VPC, and all back-end Amazon EC2 instances are in service.
However, your web browser times out when connecting to the load balancer’s DNS name. Which options are
probable causes of this behavior? (Choose two.)

A.
The load balancer was not configured to use a public subnet with an Internet gateway configured

B.
The Amazon EC2 instances do not have a dynamically allocated private IP address

C.
The security groups or network ACLs are not property configured for web traffic.

D.
The load balancer is not configured in a private subnet with a NAT instance.E. The VPC does not have a VGW configured.

Explanation:
There is no such thing as VGW. Hence E is not correct answer.