Which three statements about RSTP are true?()
- A RSTP significantly reduces topology reconverging time after a link failure.
- B RSTP expends the STP port roles by adding the alternate and backup roles.
- C RSTP port atates are blocking,discarding,learing,or forwarding.
- D RSTP also uses the STP proprsal-agreement sequence.
- E RSTP use the same timer-baseed process as STP on point-to-point links.
- F RSTP provides a faster transition to the forwarding state on point-to-point links than STP does.