單項(xiàng)選擇題

public class Test {  
public static void main (String args) { 
string foo = “blue”; 
string bar = foo;  
foo = “green”;  
System.out.printIn(bar);  
}  
}  
What is the result?()  

A. An exception is thrown.
B. The code will not compile.
C. The program prints “null”
D. The program prints “blue”
E. The program prints “green”

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