单选题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 thisnetwork is true？（）AFor the two vlans to communicate，a network statement for the trunk interface needs to be added to the OSPF configuration.BFor the two vlans to communicate， a network statement for each subinterface needs to be added to the OSPF configuration.CDirect inter-vlan communication does not require OSPFDOSPF cannot be used if router-on-a-stick is configured on the router
单选题
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 thisnetwork 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
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