Which is wrong among the following descriptions of Token Ring

A、Nodesinthetokenringnetworkformaclosedringstructurethroughanetworkcardandapoint-to-pointline;
B、Thedataintheringistransmittedaroundtheringstationalongonedirection;
C、Thecontroloftokenringissuitableforheavyloadapplication;
D、Tokenringandtokenmaintenancearecomplicated,andnetworkingcostishigh