A switch has been configured with two VLANs and is connected to a router with a trunk for Inter-VLAN routing. OSPF has been configured on the router, as the routing protocol for the network. Which statement about this network is true?

A.
For the two VLANs to communicate, a network statement for the trunk interface needs to be added to the OSPF configuration.

B.
For the two VLANs to communicate, a network statement for each subinterface needs to be added to the OSPF configuration.

C.
Direct Inter-VLAN communication does not require OSPF.

D.
OSPF cannot be used if router-on-a-stick is configured on the router.