What is the output of the following program? public class ReferenceMystery3 { public static void main (String

What is the output of the following program?

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public class ReferenceMystery3 { public static void main (String [] args) { int a = 7; %3D int b = 9; Point pl new Point (2, 2); Point p2 new Point (2, 2); addToXTwice (a, pl); System.out.println (a + " " + b + " " + pl.x + " " + p2.x); addToXTwice (b, p2); System.out.println (a + + b + " + pl.x + + p2.x); public static void addToXTwice (int a, Point p1) { a a + a; pl.x a; System.out.println (a + + pl.x); } %3D %3D %3D