Which line in the given configuration contains a locally significant value?
Refer to the exhibit.

A.
ip nhrp holdtime 60

B.
ip nhrp map multicast 150.1.1.1

C.
ip nhrp network-id 123

D.
tunnel key 123

E.
ip nhrp authentication cisco

Explanation:
http://www.cisco.com/c/en/us/td/docs/ios/12_4/ip_addr/configuration/guide/hadnhrp.html
The NHRP network ID is a local only parameter. It is significant only to the local router
and it is not transmitted in NHRP packets to other NHRP nodes. For this reason the actual value of the NHRP network ID configured on a router need not match the same
NHRP network ID on another router where both of these routers are in the same NHRP
domain. As NHRP packets arrive on a GRE interface, they are assigned to the local NHRP
domain in the NHRP network ID that is configured on that interface.