Which two OSPF network types should the designer use to establish OSPF neighborship between OSPF routers through the ATM network?

A company wants a design that would support OSPF through a service provider ATM network.

Which two OSPF network types should the designer use to establish OSPF neighborship between OSPF routers through the ATM network? (Choose two.)
A . A broadcast network will always work through ATM networks.
B . A broadcast network will work when the broadcast support is explicitly configured at the ATM network.
C . Explicit neighbor statements are required when a nonbroadcast network is configured.
D . Explicit neighbor statements are required when a point-to-multipoint network is configured.
E . A nonbroadcast network does not require DR selection.

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Answer: B,C