Which two commands configured on the interface could resolve the issue?

Refer to the exhibit.

A new Ethernet link was added to an existing OSPF network. It is possible to ping the remote end
of the link, but the OSPF adjacency does not form. Which two commands configured on the
interface could resolve the issue? (Choose two.)

A.
ip ospf mtu-ignore

B.
ip ospf flood-reduction

C.
ip mtu 1500

D.
ip mss 1500

Explanation:
ip ospf mtu-ignore
To disable OSPF MTU mismatch detection on receiving DBD packets, use the ip ospf mtu-ignore
command in interface configuration mode. To reset to default, use the no form of this command.

ip ospf mtu-ignore
no ip ospf mtu-ignore

http://www.cisco.com/en/US/docs/ios/12_3t/ip_route/command/reference/ip2_i1gt.html#wp110916
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