In which two ways does FortiManager function when it is deployed as a local FDS? (Choose two.)

In which two ways does FortiManager function when it is deployed as a local FDS? (Choose two.)

A. It provides VM license validation services. B. It supports rating requests from non-FortiGate devices. C. It caches available firmware updates for unmanaged devices. D. It can be configured as an update server, a rating server, or both.