Click the Exhibit button. In the exhibit, network 172.16.0.0/16 is redistributed into IS-IS in
Area 49.0002. R1 must use R2 to access 172.16.0.0/16. All other traffic leaving Area
49.0001 must use R4.Which three steps will accomplish this task? (Choose three.)

A.
Leak network 172.16.0.0/16 into L1 on R2.

B.
Redistribute a static default route into L1 on R4.

C.
Enable an L2 adjacency on the link between R1 and R2.

D.
Disable the attached bit on R4 in Area 49.0001.

E.
Configure R1 to ignore the attached bit.