A cybersecurity professional wants to determine if a web server is running on a remote host with the IP address 192.168.1.100. Which of the following can be used to perform this task?
A. nc 192.168.1.100 -1 80
B. ps aux 192.168.1.100
C. nmap 192.168.1.100 -p 80 -A
D. dig www 192.168.1.100
E. ping -p 80 192.168.1.100