Which of the following is the function of MPLS forwarding equivalence class (FEC)?

Which of the following is the function of MPLS forwarding equivalence class (FEC)?
A . The FEC determines forwarding of IP data packets on the MPLS IS
C . The FEC determines establishment of LSPs.
D . The FEC determines the mapping between LSPs and IP data packets.
E . The FEC determines how label addition on LSPs.

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Answer: C