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When animating a chart you can elect to display the bars of the chart by ________ or by category

Fill in the blank(s) with correct word

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