Refer to the Exhibit

Multiple Choice

Refer to the exhibit. A network administrator configured a site-to-site VPN tunnel between two Cisco IOS routers, and hosts are unable to communicate between two sites of VPN. The network administrator runs the debug crypto isakmp sa command to track VPN status. What is the problem according to this command output?

A) interesting traffic was not applied
B) encryption algorithm mismatch
C) authentication key mismatch
D) hashing algorithm mismatch