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”