Which three statements about RSTP are true?

Which three statements about RSTP are true? (Choose three.)

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

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

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

D.
RSTP provides a faster transition to the forwarding state on point-to-point links than STP does.

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

F.
RSTP uses the same timer-based process as STP on point-to-point links.