Which of the Following Statements About RSTP and STP Is

Which of the following statements about RSTP and STP is true?

A) STP has more port states than RSTP.
B) The port roles used in RSTP is less than the port roles used in STP.
C) Since RSTP adopts fast convergence mechanism, it does not have Learning state which is available in STP.
D) Same as STP, the ports will enter into Listening state once the RSTP has been enabled. Then, the ports can receive BPDU and calculate the spanning tree.