Which statement best describes the term $$Network Enumeration$?$

Question $6$ options:

Network Enumeration means by hackers scout target leverage techniques over the phone to make the target reveal critical information such as SSN$,$ credit information

Network Enumeration means "case the joint" this is another form of intelligence gathering

Enumeration identifies promising avenues of entry, more intrusive probing can begin as valid user accounts and poorly protected resource shares are exploited to gain access

Network Enumeration describe the motivation of a hacker and the level of ingenuity of the hackers

All of the above