Which Wide Area Network $($WAN$)$ technology requires the first router in the path to determine the full path the packet will travel, removing the need for other routers in the path to make independent determinations?

A$.$ Synchronous Optical Networking $($SONET$)$

B$.$ Multiprotocol Label Switching $($MPLS$)$

C$.$ Fiber Channel Over Ethernet $($FCoE$)$

D$.$ Session Initiation Protocol $($SIP$)$