RTA and RTB Are Interconnected Through a FE Interface in an OSPF

Multiple Choice

RTA and RTB are interconnected through a FE interface in an OSPF area. Which of the following can be used to configure the link cost between RTA and RTB as 10? (Select 2 answers)

A) Use command "ospf cost 10" on the two routers
B) Use command "ospf cost 5" on the two routers
C) Use command "bandwidth-reference 500" on the two routers to change bandwidth-reference value
D) Use command "bandwidth-reference 1000" on the two routers to change bandwidth-reference value