Refer to the exhibit. How was spanning-tree configured on this interface?
A. By entering the command spanning-tree portfast trunk in the interface configuration mode. Most Voted
B. By entering the command spanning-tree mst1 vlan 10,20,30,40 in the global configuration mode.
C. By entering the command spanning-tree portfast in the interface configuration mode.
D. By entering the command spanning-tree vlan 10,20,30,40 root primary in the interface configuration mode.
Correct Answer: A