The figure shows the stable topology after STP calculation and convergence, then the following statements are correct:

The figure shows the stable topology after STP calculation and convergence, then the following statements are correct:

A . SWA is the root bridge in the network
B . The BPDU is a configuration BPDU, the destination address is 01-80-C2-00-00-0
C . The sending period of this BPDU is HelloTime
D . The port saves the aging time of the BPDU as MaxAge

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Answer: ABCD