Talia Has Just Been Hired as the First Security Employee

Talia has just been hired as the first security employee at an organization. Until this point, security has been everyone's responsibility, but she knows that the IT staff have different skill sets and may not be aware of certain weaknesses within various platforms. Which of the following tools might Talia use to help her determine the state of the existing infrastructure?

A) NIDS
B) Vulnerability scanner
C) OS fingerprinting
D) syslog