Which three statements about RSTP are true?

Which three statements about RSTP are true?

A.
RSTP significantly reduces topology reconverging time after link failure.

B.
RSTP expands the STP port roles by adding the alternate and backup roles.

C.
RSTP port states are blocking, discarding, learning and forwarding.

D.
RSTP also uses the STP proposal-agreement sequence.

E.
RSTP use the same timer-based 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.