While Investigating an Email Issue, a Support Technician Discovers No

Multiple Choice

While investigating an email issue, a support technician discovers no users can access their email accounts on the company's email server connected to the private LAN. Pinging the email server from several workstations on the LAN results in 0% packet loss.
Which of the following is the next step the technician should take in troubleshooting this issue?

A) Contact the ISP, inform the provider of the issue, and ask the provider to check the server.
B) Verify the server has a valid assigned IP address on the LAN subnet.
C) Escalate the problem to a server administrator to check for issues with the server.
D) Check the workstations on the LAN for APIPA configuration.