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【单选题】
关于 STP 的桥 ID, 下列说法正确的是
A.
网络中具有最小桥ID的网桥，经过STP计算，最终将会成为根桥
B.
桥ID由桥MAC地址和优先级字段组成，进行桥ID的比较时，先比较MAC地址，MAC地址值小者为优
C.
SWA 和 SWB 的 MAC 地址分别为 00-E0-FC-00-00-11 和 00-E0-FC-11-00-11, 两者优先级分别为 32768 和 4096, 则当 SWA 和 SWB 进行环形组网并启用生成树协议后， SWA 将成为根桥
D.
桥优先级字段长度为 2 个字节，因此桥优先级的取值范围为 0-65535
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