单项选择题
How would an administrator configure a VIO server to deny rsh connections from IP address 192.168.16.109?（）
A.chnetsvc rsh -o deny=192.168.16.109
B.chtcpip -s rsh -o deny=192.168.16.109
C.cfgsec -level high -deny port=514 -address 192.168.16.109
D.viosecure -firewall deny -port 514 -address 192.168.16.109
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