A Public-Facing Web Application Queries a Database Hosted on an Amazon

A public-facing web application queries a database hosted on an Amazon EC2 instance in a private subnet. A large number of queries involve multiple table joins, and the application performance has been degrading due to an increase in complex queries. The application team will be performing updates to improve performance. What should a solutions architect recommend to the application team? (Choose two.)

A) Cache query data in Amazon SQS
B) Create a read replica to offload queries
C) Migrate the database to Amazon Athena
D) Implement Amazon DynamoDB Accelerator to cache data.
E) Migrate the database to Amazon RDS