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? 

Answer options:

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

C

When you delete a resource group, all of its resources are also deleted. Deleting a resource group deletes all of its template deployments and currently stored operations. Reference: https://docs.microsoft.com/en-us/azure/azure-resource-manager/management/delete-resource-group?tabs=azure-powershell