A company has been using the AWS RDS-MySQL Instance. There is a requirement now to disable backups for the AWS RDS Instance. You are trying to set the retention period to 0 to disable backups. But this is resulting in an error. Which of the following could be the possible reason for the error?

Answer options:

A.There are already backups in place.
B.There is a Read replica in place.
C.You cannot disable backups.
D.The database should be taken offline to disable backups.

Correct Answer: B
The AWS Documentation mentions the following.
There are several reasons why you may need to set the backup retention period to 0. For example, you can disable automatic backups immediately by setting the retention period to 0. If you set the value to 0 and receive a message saying that the retention period must be between 1 and 35, check to make sure you haven`t set up a read replica for instance. Read replicas require backups for managing read replica logs. Thus, you can`t set the retention period of 0.
Since this is clearly mentioned in the AWS documentation, all other options are invalid.
For more information on Troubleshooting AWS RDS, please refer to the below URL-
https://docs.aws.amazon.com/AmazonRDS/latest/UserGuide/CHAP_Troubleshooting.html