whiCh stAtEmEnt is not truE ABout voip
A．it is thE ChEApEst wAy oF worlD-wiDE CommuniCAtion.
B．it is A gooD wAy to BuilD strong rElAtions.
C．it hAs thE sAmE quAlity As thE trADitionAl tElEphonE sErviCE.
D．it usEs A singlE nEtwork to trAnsFEr voiCE AnD DAt