Martin is a Cloud Security Engineer of Whizlabs Inc. As the best practice, he implemented the option to change the access key of the Blob storage regularly. Consequently, the storage keys of Blob storage (Polybase) are also required to rotate, which is the underlying storage of the dedicated SQL pool of Azure Synapse analytics. 
For each storage account, whose key is required to change, he issued the following ALTER DATABASE SCOPED CREDENTIAL t-sql command for rotating key from key1 to key2. 
ALTER DATABASE SCOPED CREDENTIAL credential_name WITH IDENTITY = ‘identity_name’, SECRET =’key2’ 
Does the step match the requirement for this scenario?

Answer options:

A.Yes
B.No

Correct Answer: A
Option A is correct because the following command is required to execute for rotating storage account keys from Key1 to Key2.
 ALTER DATABASE SCOPED CREDENTIAL credential_name WITH IDENTITY = ‘identity_name’, SECRET =’key2’ 

https://docs.microsoft.com/en-us/azure/synapse-analytics/sql-data-warehouse/guidance-for-loading-data