How does FortiManager handle FortiGuard requests from FortiGate devices, when it is configured as a local FDS?

How does FortiManager handle FortiGuard requests from FortiGate devices, when it is configured as a local FDS?
A . FortiManager can download and maintain local copies of FortiGuard databases.
B . FortiManager supports only FortiGuard push to managed devices.
C . FortiManager will respond to update requests only if they originate from a managed device.
D . FortiManager does not support rating requests.

Answer: A