Windows ________ helps prevent viruses, spyware, and malicious or unwanted software from being installed on your PC without your knowledge

Which of the following steps turns off a timer control?

(A) Set the Interval property to zero. (B) Set the Enabled property to False. (C) Make the timer control invisible. (D) None of the above

Spreadsheet columns can be hidden but rows cannot.

a. true b. false c. not enough information