John works as an Ethical Hacker for

www$.$company.com Inc. He wants to find out the ports that are open in

www$.$company.com's server using a port

scanner. However, he does not want to establish a full TCP connection. Which of the following scanning techniques will he use to accomplish this task?

A$.$ TCP SYN

B$.$ Xmas tree

C$.$ TCP SYN$/$ACK

D$.$ TCP FIN