You currently have a Redshift cluster which is using KMS key for encryption in a region. You now need to ensure that the cluster can be moved to another region. Which of the following steps would you put as part of the implementation. Choose 2 answers from the options given below

Answer options:

A.Ensure that the KMS key is copied from the source region to the destination region
B.Ensure that a new KMS key is created in the new region
C.Configure a snapshot copy grant for a master key in the destination region
D.Configure a snapshot copy grant for a master key in the source region

Answer – B and C
The AWS Documentation mentions the following
When you launch an Amazon Redshift cluster, you can choose to encrypt it with a master key from the AWS Key Management Service (AWS KMS). AWS KMS keys are specific to a region. If you want to enable cross-region snapshot copy for an AWS KMS-encrypted cluster, you must configure a snapshot copy grant for a master key in the destination region so that Amazon Redshift can perform encryption operations in the destination region. The following procedure describes the process of enabling cross-region snapshot copy for an AWS KMS-encrypted cluster.
Since this is clearly mentioned in the AWS documentation , the other options are invalid
For more information on using snapshots copy with KMS keys, please refer to the below URL
https://docs.aws.amazon.com/redshift/latest/mgmt/managing-snapshots-console.html#xregioncopy-kms-encrypted-snapshot