Which two statements about the spanning-tree bridge ID are true? (Choose two)

Which two statements about the spanning-tree bridge ID are true? (Choose two)
A . It is composed of a 4-bit bridge priority and a 12-bit system ID extension.
B . The bridge ID is transmitted in the IP header to elect the root bridge.
C . The system ID extension is a value between 1 and 4095.
D . It is composed of an 8-bit bridge priority and a 16-bit system ID extension.
E . The bridge priority must be incremented in blocks of 4096.

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Answer: AE