which kind of OSPF router?

In comparing IS-IS with OSPF, a Level-1-2 IS-IS router is similar to which kind of OSPF router?

A.
ASBR on a normal OSPF area

B.
ASBR on NSSA

C.
ABR on totally stubby OSPF area

D.
ABR on stubby OSPF area

E.
ABR on a normal OSPF area

Explanation: