A Developer Is Writing an Application in AWS Lambda

Multiple Choice

A Developer is writing an application in AWS Lambda. To simplify testing and deployments, the Developer needs the database connection string to be easily changed without modifying the Lambda code. How can this requirement be met?

A) Store the connection string as a secret in AWS Secrets Manager.
B) Store the connection string in an IAM user account.
C) Store the connection string in AWS KMS.
D) Store the connection string as a Lambda layer.