What is the next logical troubleshooting action?

Server A, Server B, and Server C are connected to the same network switch and are on the sari
Each server has a single network interface, net0.
You received a tech support call that Server B has lost network connectivity. Your troubleshooting
has discovered:
Server A can ping Server C, but not Server B.
Server B can ping localhost, but not Server A or C.
Server C can ping Server A, but not Server B.
On Server F3, you enter the following command:
dladm show-phys | grep net0

Response:
net0/v4 Ethernet down 0 unknown el00gl
What is the next logical troubleshooting action?

A.
Run arp -a on all servers.

B.
Confirm that the router is working.

C.
Confirm that the power light of the network switch is on.

D.
Confirm that the physical network connections are intact.

E.
On Server A and C, run tranceroute �n server.

F.
On Server B, run tranceroute �n servera and tranceroute �n serverc.

Explanation:
Check the physical connection.