Refer to the exibit. Three cisco 2950 switches are set to their default priority settings.During the spanning-tree process,which switch will be elected as the root bridge?()<br /> <img src="https://nimg.ppkao.com/2018-07/yiyu/2018072314082137678.jpg?sign=1c34109288fb8ddd84696baa38efc541&t=62d19bc5" />
A、Switch3
B、Switch4
C、Switch2
D、Switch1