Which configuration ensures that the switch is always the root for VLAN 750?
A.Switch(config)#spanning-tree vlan 750 priority 38003685 B.Switch(config)#spanning-tree vlan 750 root primary C.Switch(config)#spanning-tree vlan 750 priority 614440 D.Switch(config)#spanning-tree vlan 750 priority 0正确答案D
