Refer to the exhibit.

A.
Interface authentication must be configured.

B.
The routing processes must be configured with an area ID.

C.
IP unicast routing must be enabled.

D.
IPv4 addresses must be applied to the interfaces.

Explanation:
http://www.cisco.com/en/US/docs/switches/lan/catalyst3560/software/release/12.2_55_se/configur
ation/guide/swiprout.html