【单选题】The TestKing LAN is displayed in the following diagram: Assuming all hosts and servers are in the same VLAN, which statement is correct about the exhibit?
A.
Switch TestKing2 is the root bridge.
B.
Spanning Tree Protocol is not running.
C.
Host TestKingD and Server1 are in the same network.
D.
No collisions can occur in traffic between Host TestKingB and host TestKing