You can select only one picture for a desktop background.

The identifiers Vanilla, Strawberry, and Chocolate, which appear inside the braces, are known as ____________.

Look at the following code sample: ``` enum Flavor { Vanilla, Strawberry, Chocolate } ``` a. constants b. references c. mnemonics d. enumerators

Polymorphism is when __________ in a class hierarchy perform differently, depending on which object performs the call.

a. base class constructors b. derived class constructors c. member functions d. derived class destructors e. None of these