If the PFE does not have a route to the destination address of a packet, which action will be taken?（）

A.The PFE floods the packet out of all interfaces.

B.The PFE drops the packet and sends a destination unreachable notification back to source device.

C.The PFE forwards the packet to the routing engine for furtherprocessing.

D.The PFE queues the packet and sends are quest for a layer3 lookup to the routing engine.