You need to ensure that you can immediately resolve Server1.contoso.com to the new IP address

Your network contains a DNS zone for contoso.com.
All servers register their host names in DNS by using dynamic updates.
The network contains a server named Server1.contoso.com.
From a computer named Computer1 that runs Windows 7, you successfully resolve
Server1.contoso.com to an IP address.
You change the IP address of Server1.contoso.com.
From Computer1, you discover that server1.contoso.com still resolves to the old IP address.
You successfully connect to server1.contoso.com by using the new IP address.
You need to ensure that you can immediately resolve Server1.contoso.com to the new IP address.
What should you do on Computer1?

A.
Run ipconfig.exe and specify the /flushdns parameter.

B.
Run netsh.exe and specify the dnsclient context.

C.
Restart the Peer Name Resolution Protocol (PNRP) service.

D.
Run dnscacheugc.exe.