单选题Three switches are connected to one anther via trunk ports.Assuming the default switch configuration,which switch is elected as the root bridge for the spanning-tree instance of vlan 1?（）Athe switch with the lowest MAC addressBthe switch with the higest MAC addressCthe switch witch the higest IP addressDthe switch with the lowest IP address
单选题
Three switches are connected to one anther via trunk ports.Assuming the default switch configuration,which switch is elected as the root bridge for the spanning-tree instance of vlan 1?（）
A
the switch with the lowest MAC address
B
the switch with the higest MAC address
C
the switch witch the higest IP address
D
the switch with the lowest IP address
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