Which of the following techniques is MOST likely to gat…

A malicious user has collected the following list of information:
192.168.1.5 OpenSSH-Server_5.8
192.168.1.7 OpenSSH-Server_5.7
192.168.1.9 OpenSSH-Server_5.7Which of the following techniques is MOST likely to gather this type of data?

A.
Banner grabbing

B.
Port scan

C.
Host scan

D.
Ping scan