單項選擇題

public class Ball { 
public enum Color { RED, GREEN, BLUE }; 
public void foo() { 
// insert code here 
{ System.out.println(c); } 
} 
} 
Which code inserted at line 14 causes the foo method to print RED, GREEN, and BLUE?() 

A. for( Color c : Color.values())
B. for( Color c = RED; c <= BLUE; c++)
C. for( Color c; c.hasNext() ; c.next())
D. for( Color c = Color[0]; c <= Color[2]; c++)
E. for( Color c = Color.RED; c <= Color.BLUE; c++)

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