You manage a cloud service that utilizes an Azure Service Bus queue.
You need to ensure that messages that are never consumed are retained.
What should you do?

A.
Check the MOVE TO THE DEAD-LETTER SUBQUEUE option for Expired Messages in the Azure Portal.

B.
From the Azure Management Portal, create a new queue and name it Dead-Letter.

C.
Execute the Set-AzureServiceBus PowerShell cmdlet.

D.
Execute the New-AzureSchedulerStorageQueueJob PowerShell cmdlet.

Explanation:
The EnableDeadLetteringOnMessageExpiration property allows to enable\\disable the dead-lettering on
message expiration.
https://www.simple-talk.com/cloud/cloud-data/an-introduction-to-windows-azure-service-busbrokered-messaging/