What output is produced by the following program: public class Final_Q3 { public static void main (String [] args) { int x = 1, y = 2, z = 3: z = f (x, z, y): System.out.println (x + "" + y + "" + z): x = f (z, z, x): System.out.println (x + "" + y + "" + z): } public static int f (int a, int b, int c) { a--: b = 2 * c + a: c = b - 1: System.out.println (c + "" + a): return b: } }