Refer to the exhibit. When R2 attempted to copy a file the TFTP server, it received this error message. When action can you take to correct the problem?
A. configure the ip tftp source-interface Fa0/1 command on R2
B. configure the ip tftp source-interface Fa0/1 command on R1
C. configure the ip tftp source-interface Loopback0 command on R2
D. configure the ip tftp source-interface Loopback0 command on R1
E. Change the access-list configuration on R1 to access-list 1 permit 172.16.1.0 0.0.0.255.
