An engineer must apply an 802.1ad-compliant configuration to a new switchport with these requirements:The switchport must tag all traffic when it enters the port.The switchport is expected to provide the same level of service to traffic from any customer VLAN. Which configuration must the engineer use?
A. nterface GigabitEthernet1/0/1 ethernet dot1ad uni s-port service instance 12 encapsulation default
B. ewrite ingress tag push dot1ad 21 symmetric bridge-domain 12
C. nterface GigabitEthernet1/0/1 ethernet dot1ad uni c-port service instance 12 encapsulation dot1q
D. ewrite ingress tag push dot1ad 21 symmetric bridge-domain 12
E. nterface GigabitEthernet1/0/1 switchport mode trunk
F. witchport trunk encapsulation dot1q encapsulation ISL
G. ridge-domain 12
H. nterface GigabitEthernet1/0/1 ethernet dot1ad nni