Which two AWS services provide out-of-the-box user configurable automatic backup-as-a-service and backup rotation options? (Choose two.)

A. Amazon S3

B. Amazon RDS

C. Amazon EBS

D. Amazon Red shift

Explanation:
By default, and at no additional charge, Amazon RDS enables automated backups of your DB In-stance with a 1-day retention period.
By default, Amazon Redshift enables automated backups of your data warehouse cluster with a 1-day retention period.