Refer to the exhibit. Based on this command output, what can we conclude about R3?()<br /> <img src="https://img.ppkao.com/2018-07/yiyu/2018073016165696442.jpg" /><p> Refer to the exhibit. Based on this command output, what can we conclude about R3?()<br /> <img src="https://img.ppkao.com/2018-07/yiyu/2018073016165696442.jpg" /></p>
A、A. R3 is an ABR.
B、B. R3 is not connec ted to the backbone.
C、C. R3 has four neighbors.
D、D. R3 is the DR for area 2.