Which two OSPF area types will support this configuration?

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Given the OSPF network topology shown in the exhibit, you would like to inject external (nonOSPF) routes into the network on Router D
Which two OSPF area types will support this configuration? (Choose two)

A.
stub area

B.
totally stubby area

C.
not-so-stubby area

D.
non-backbone area

Explanation: