Which two states are the port states when RSTP has converged?

Which two states are the port states when RSTP has converged? (Choose two.)

A.
discarding

B.
listening

C.
learning

D.
forwarding

E.
disabled

Explanation:
Understanding Rapid Spanning Tree Protocol (802.1w)
http://www.cisco.com/en/US/tech/tk389/tk621/technologies_white_paper09186a0080094cfa.shtm
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Port States There are only three port states left in RSTP that correspond to the three possible
operational states. The 802.1D disabled, blocking, and listening states are merged into a unique
802.1w discarding state. RSTP only has 3 port states which are discarding, learning and forwarding.
When RSTP has converged there are only 2 port states left:
discarding and forwarding.