What is the purpose of Fibre Channel over Ethernet?

What is the purpose of Fibre Channel over Ethernet?

A.
FCoE maps Fibre Channel onto Layer 2 Ethernet, Converging IP, and storage networks.

B.
FCoE encapsulates native Fiber Channel traffic inside iSCSI packets.

C.
FCoE encapsulates native Fiber Channel traffic inside GRE tunnels.

D.
Data Center Bridging uses FCoE to transport IP traffic over native Fiber Channel.

E.
FCoE encapsulates Native Fiber Channel inside IP packets.