which two commands enable the QinQ tagging?

When implementing H-VPLS with QinQ access on Cisco Metro Ethernet switches, which two
commands enable the QinQ tagging? (Choose two.)

A.
encapsulation dot1q {customer-vlan} second-tag {sp-vlan}

B.
encapsulation dot1q {sp-vlan} second-tag {customer-vlan}

C.
switchport mode dot1q-tunnel

D.
switchport mode trunk

E.
switchport access vlan {sp-vlan}

F.
switchport access vlan {customer-vlan}