You have an Azure subscription that contains a resource group named TestRG. You use TestRG to validate an Azure deployment.

TestRG contains the following resources:

You need to delete TestRG.

What should you do first?

• A. Modify the backup configurations of VM1 and modify the resource lock type of VNET1.
• B. Turn off VM1 and delete all data in Vault1.
• C. Remove the resource lock from VNET1 and delete all data in Vault1.
• D. Turn off VM1 and remove the resource lock from VNET1.