Which statement is true about TCN propagation in RSTP (802.1w)?

A.
The originator of the TCN immediately floods this information through the network.

B.
The TCN propagation is a two step process.

C.
A TCN is generated and sent to the root bridge.

D.
The root bridge must flood this information throughout the network.

Explanation:
The TCN propagation in RSTP is unique in the way that the originator of the TCN floods
information through the network.