You have configured accessibility options for Tom. Everything works fine. You want to configure that when Tom leaves for lunch his accessibility options should automatically disable after 30 minutes. What can be done to apply this feature in 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  30 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  30 minutes".