Disk Cleanup is a program that scans your hard disk drive and RAM and removes temporary files

A plus sign in the Expand button indicates that:

A) there is lower-level text related to this level. B) this is the Primary Level. C) this is the Alpha Level. D) a graphic is associated with this level.

Problems using switch logic to deal with many objects of different types do not include:

a. Forgetting to include an object in one of the cases. b. Having to update the switch statement whenever a new type of object is added. c. Having to track down every switch statement to do an update of object types. d. Not being able to implement separate functions on different objects.