Application Developers Have Noticed That a Production Application Is Very

Application developers have noticed that a production application is very slow when business reporting users run large production reports against the Amazon RDS instance backing the application. The CPU and memory utilization metrics for the RDS instance do not exceed 60% while the reporting queries are running. The business reporting users must be able to generate reports without affecting the applications performance. Which action will accomplish this?

A) Increase the size of the RDS instance
B) Create a read replica and connect the application to it.
C) Enable multiple Availability Zones on the RDS instance
D) Create a read replication and connect the business reports to it.