Refer to the exhibit. A packet from network 10.0.1.0/24 destined for network 10.0.2.0/24 arrives at R1 on interface Gi0/0, but the router drops the packet instead of transmitting it out interface Gi0/1. Which feature that is configured on R1 can cause this problem?
A. UDLC
B. split horizon
C. uRPF
D. spanning tree
