A Company Is Migrating Its On-Premises Database to Amazon RDS

Multiple Choice

A company is migrating its on-premises database to Amazon RDS for MySQL. The company has read-heavy workloads, and wants to make sure it re-factors its code to achieve optimum read performance for its queries. How can this objective be met?

A) Add database retries to effectively use RDS with vertical scaling
B) Use RDS with multi-AZ deployment
C) Add a connection string to use an RDS read replica for read queries
D) Add a connection string to use a read replica on an EC2 instance.