Refer to the partial Cisco IOS router configuration exhibit.

Which statement is true?

A.
To support the subinterface configuration, the Fa0/0 main interface configuration is missing the
encapsulation dot1Q command.

B.
The Fa0/0 interface/subinterfaces are configured correctly to operate as a trunk port to provide
inter-VLAN routing for three VLANs (VLANs 1, 2, and 3).

C.
To provide inter-VLAN routing, the Fa0/0.1, Fa0/0.2 and Fa0/0.3 subinterface configuration is
missing the encapsulation dot1Q vlan-id subinterface configuration command.

D.
To provide inter-VLAN routing, the router is missing the vlan 1, vlan 2, and vlan 3 global
configuration commands.