$9\mathrm{.}1\%$ complete

Question

An organization's system alerting tool detects a series of unsuccessful attempts by someone trying to gain unauthorized access to its servers. These attempts lack sophistication and appear to be using publicly available hacking tools. Which type of threat actor is MOST likely responsible for these attempts?

A$.$Unskilled attacker

B$.$Nation$-$state

C$.$Insider threat

D$.$Hacktivist