In Any Transport over MPLS (AtoM) Control word is an optional 4-byte field used in the

pseudowire packet. The control word carries generic and Layer 2 payload-specific information to
emulate L2 packets correctly. In pseudowire packet, where is this Control Word inserted ?

A.
Inserted between the MPLS label stack and the Layer 3 payload

B.
Inserted between the MPLS label stack and the Layer 3 Header

C.
Inserted between the MPLS label stack and the Layer 2 payload

D.
Inserted between the MPLS label stack and the Layer 2 header