When constructing references, the reference should be of the same data type as the ____________________ to which it refers.

Which of the following does not complete the sentence correctly? An interface .

a. forces classes that implement it to declare all the abstract interface methods. b. can be used in place of an abstract class when there is no default implementation to inherit. c. is declared in a file by itself and is saved in a file with the same name as the interface followed by the .java extension. d. can be instantiated.

____ games allow a large number of players, often thousands or tens of thousands, to interact, form groups, and compete against one another within a simulated virtual world.

A. MMPRG B. MMRPG C. MMORG D. MMOG