Which Statement About the Behavior of OSPF on a Hub-And-Spoke

Which statement about the behavior of OSPF on a hub-and-spoke topology is true?

A) Additional host routes are added to the routing table on a NBMA network type.
B) The DR and BDR election occurs regardless of the underlying OSPF network type.
C) The DR election is a challenge unless a point-to-point network type is used.
D) Traffic does not need to traverse the hub to reach the spokes.