A penetration tester runs a scan against a server and obtains the following output:

Which of the following command sequences should the penetration tester try NEXT?

A. ftp 192.168.53.23
B. smbclient \\WEB3\IPC$ -I 192.168.53.23 -U guest
C. ncrack -u Administrator -P 15worst_passwords.txt -p rdp 192.168.53.23
D. curl -X TRACE https://192.168.53.23:8443/index.aspx