You are securing access to the resources in an Azure subscription. A new company policy states that all the Azure virtual machines in the subscription must use ...

You are securing access to the resources in an Azure subscription.
A new company policy states that all the Azure virtual machines in the subscription must use managed disks.
You need to prevent users from creating virtual machines that use unmanaged disks.
What should you use?

A. Azure Monitor B. Azure Policy C. Azure Security Center D. Azure Service Health