Which code， inserted at line 14， allows the Sprite class to compile？（）

A.Direction d = NORTH；
B.Nav.Direction d = NORTH；
C.Direction d = Direction.NORTH；
D.Nav.Direction d = Nav.Direction.NORTH；

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Given a correctly compiled class whose source code is：

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A class games.cards.Poker is correctly defined in the jar file Poker.jar. A user wants to execute the main method of Poker on a UNIX system using the command： java games.cards.Poker What allows the user to do this？（）

A.put Poker.jar in directory /stuff/java，and set the CLASSPATH to include /stuff/java
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What is the result？（）

A.s=14
B.s=16
C.s=10
D.Compilation fails.
E.An exception is thrown at runtime.

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