All client computers on your company network run Windows 7 and are members of an Active Directory Domain Services domain

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All client computers on your company network run Windows 7 and are members of an Active Directory Domain Services domain.
A network administrator changes the IP address of a file server.
Employees are unable to connect to the file server.
You need to ensure that the employees are able to connect to the file server immediately.
What should you do?

A. Instruct the employees to run the ipconfig /renew command.
B. Update the Hosts file on the file server with the new IP address.
C. Run a remote Windows PowerShell script to flush the DNS resolver cache on each computer.
D. Run a remote Windows PowerShell script to run the netstat command on each computer.