DNS cache snooping is a process of determining if the specified resource address is present in the DNS cache records. It may be useful during the examination of the network to determine what software update resources are used, thus discovering what software is installed. What command is used to determine if the entry is present in DNS cache?

A. nslookup -fullrecursive update.antivirus.com
B. dnsnooping –rt update.antivirus.com
C. nslookup -norecursive update.antivirus.com
D. dns –snoop update.antivirus.com