A Company Has a Legacy Application That Was Migrated to a Fleet

Multiple Choice

A company has a legacy application that was migrated to a fleet of Amazon EC2 instances. The application stores data in a MySQL database that is currently installed on a single EC2 instance. The company has decided to migrate the database from the EC2 instance to MySQL on Amazon RDS. What should the Developer do to update the application to support data storage in Amazon RDS?

A) Update the database connection parameters in the application to point to the new RDS instance.
B) Add a script to the EC2 instance that implements an AWS SDK for requesting database credentials.
C) Create a new EC2 instance with an IAM role that allows access to the new RDS database.
D) Create an AWS Lambda function that will route traffic from the EC2 instance to the RDS database.