【单项选择题】
Your portable computer is in sleep mode. When you resume work on the portable computer， you are not prompted for a password. <br /> You need to ensure that you are prompted for a password each time the portable computer recovers from sleep mode.<br />  What should you do？（）<p> Your portable computer is in sleep mode. When you resume work on the portable computer， you are not prompted for a password. <br /> You need to ensure that you are prompted for a password each time the portable computer recovers from sleep mode.<br />  What should you do？
A、A.Configure the computer to hibernate when not in use.
B、B.In the current power plan settings， configure the computer to require a password when recovering from sleep mode.
C、C.Configure the computer to use the High Performance power plan.
D、D.Configure the screen saver settings to require a password on resumption of work.
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