Refer to the exhibit. An engineer deployed an MPLS TE tunnel where R1 is the head-end of the tunnel and R7 is the tail-end of the tunnel. All links marked as dashed red in the topology must be avoided. Which MPLS TE feature accomplishes this task? 

Answer options:

A. Use explicit paths to set up the Traffic Engineering tunnel and exclude R3 and R4 in the explicit path at R1.
B. Use explicit paths to set up the Traffic Engineering tunnel and include R3 and R4 in the explicit path at R1.
C. Use loose-hop-expansion EROs and select R4 and R7 as the loose hops.
D. Use affinity bits to mark these links and exclude them during CSPF computation.

B