You have configured accessibility options for Tom. Everything works fine. When Tom leaves for lunch and returns an hour later， he finds that none of the accessibility options work anymore. What can be done to restore the functionality of his accessibility options？（）

• A、Turn on FilterKeys, this will allow accessibility options to be turned on at will.
• B、In accessibility options on the general tab, enable "turn off accessibility features after idle for  xx minutes".
• C、From the Keyboard tab of the accessibility option applet, check the StickyKeys checkbox, this  will save all accessibility options when you exit the control panel applet.
• D、In accessibility options on the general tab, disable "turn off accessibility features after idle for  xx minutes".