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

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

Answer: BD

Explanation:

By default, and at no additional charge, Amazon RDS enables automated backups of your DB Instance with a 1-day retention period.

By default, Amazon Redshift enables automated backups of your data warehouse cluster with a 1-day retention period.