An employee reports work was being completed on a company owned laptop using a public wireless hot-spot. A pop-up screen appeared and the user closed the
pop-up. Seconds later the desktop background was changed to the image of a padlock with a message demanding immediate payment to recover the data. Which
of the following types of malware MOST likely caused this issue?

A.
Ransomware

B.
Rootkit

C.
Scareware

D.
Spyware