An organization is using a link state routing protocol that is not dependent on IP addressing. Which action should be taken to enable routing across area boundaries in this environment?

A.	Assign Level 1 router interfaces to different areas
B.	Assign Level 2 routers to different areas
C.	Assign Level 1 routers to different areas
D.	Assign Level 2 router interfaces to different areas
E.	Assign Level 2 router interfaceto the backbone area
F.	Assign Level 1 router interface to the backbone area