You are in the process of deploying an internal HTTP(S) load balancer for your web server virtual machine (VM) instances. What two prerequisite tasks must be completed before creating the load balancer? (Choose two.)

A. Choose a region. B. Create firewall rules for health checks. C. Reserve a static IP address for the load balancer. D. Determine the subnet mask for a proxy-only subnet. E. Determine the subnet mask for Serverless VPC Access.