which command or commands when attempting to resolve this problem?

Users logging into Cisco Router and Security Device Manager should be authenticated using the Cisco ISR local user database. Currently, none of the users can access Cisco Router and Security Device Manager via HTTP. You should check the configuration of which command or commands when attempting to resolve this problem?

A.
ip http secure-server

B.
ip http authentication local

C.
line vty 0 5
login local

D.
aaa new-model
aaa authentication login default local