A) Switch (config) # Spanning-tree mode rapid-pvst
B) Switch#spanning-tree mode rapid-pvst
C) Switch (config)#spanning-tree mode 802.1w
D) Switch#spanning-tree mode 802.1w
A) Switch (config) # Spanning-tree mode rapid-pvst
B) Switch#spanning-tree mode rapid-pvst
C) Switch (config)#spanning-tree mode 802.1w
D) Switch#spanning-tree mode 802.1w