A company disaster recovery policy requires that all RDS backups are retained in a secondary AWS region. What is the optimal solution to meet this requirement?

Answer options:

A.Configure RDS Read-Replica instance in the secondary region.Enable RDS automated backups on the read-replica instance.
B.Configure RDS automated backups target region to the secondary region.
C.Copy manual RDS DB snapshot to an S3 bucket.Enable Cross-Region replication on the S3 bucket.
D.Copy manual RDS DB snapshot to the secondary region.

Answer: D
Option A is incorrect because although it is possible to configure RDS read-replica with automated backups in the secondary region, this is not an optimal solution. It involves additional costs associated with the running RDS instance.
Option B is incorrect because RDS automated backups store backup data in the same region as the RDS instance. It is not possible to configure RDS automated backups to store data in a different region.
Option C is incorrect because it is not possible to copy RDS DB snapshots to S3.
Option D is CORRECT because we must copy the manual RDS DB snapshot to the secondary region.
Reference:
https://docs.aws.amazon.com/AmazonRDS/latest/UserGuide/USER_WorkingWithAutomatedBackups.html
https://docs.aws.amazon.com/AmazonRDS/latest/UserGuide/USER_CreateSnapshot.html