A Systems Administrator Migrated a Company's CRM Middleware to a VPC

Multiple Choice

A systems administrator migrated a company's CRM middleware to a VPC and left the database in the company's datacenter. The CRM application is now accessible over the Internet. A VPN between the company network and the VPC is used for the middleware to communicate with the database server. Since the migration, users are experiencing high application latency. Which of the following should the company do to resolve the latency issue?

A) Increase the resources for the middleware.
B) Add more resources to the VPC.
C) Move the database into the cloud.
D) Implement load balancers in the VPC.