You have an Azure subscription that contains four Azure virtual machines. You need to configure the virtual machines to use a single identity. The solution must...

You have an Azure subscription that contains four Azure virtual machines.
You need to configure the virtual machines to use a single identity. The solution must meet the following requirements:
• Ensure that the credentials for the identity are managed automatically.
• Support granting privileges to the identity.
Which type of identity should you use?

A. a system-assigned managed identity B. a user-assigned managed identity C. a service principal D. a user account