The Outer.1Q tag represents customer VLAN ID and inner.1Q tag represents Provider VLAN？（）

• A、The Outer.1Q tag represents customer VLAN ID and inner.1Q tag represents Provider VLAN （PVLAN ）
• B、It is an effective way to achieve VLAN transparency between Provider and enterprise customer bytunneling one ser of VLAN tags inside a second VLAN tag
• C、The Outer.1Q tag represents Service VLAN （PVLAN） and inner.1Q tag represents customer VLAN
• D、QinQ is a way to hide native VLAN which can conflict with Provider native VLAN