Refer to the exhibit.

Why would the switch be considered as a root bridge?

A.
The bridge priority is 1 and all ports are forwarding.

B.
The switch priority for VLAN 1 and the macro specifies “This Bridge is the root”.

C.
The bridge priority is 128.19 and all ports are forwarding.

D.
The switch priority value is zero, it has the lowest priority value for VLAN 1.