Which OSPF design consideration, with regards to simplicity and address preservation, must be considered when...

Mesh groups must be included in the design

The OSPF Hello and Dead timers must be tuned to detect failures as quickly as possible

The OSPF network type must be set to point-to-multipoint

An OSPF neighbor adjacency formed over loopback interfaces must be placed in Area 0

The OSPF network type must be set to point-to-point