What is the output of the following code?

import javafx.beans. property. IntegerProperty; import javafx. beans. property. SimplelntegerProperty;

public class Test $\{$

public static void main$($String$[]$ args$)\{$

IntegerProperty d$1=$ new SimpleIntegerProperty$(1)$;

IntegerProperty d$2=$ new SimplelntegerProperty$(2)$;

d$1.$bindBidirectional$($d$2)$;

System.out.print$("$d$1$ is $"+$ d$1.$getValue$()$

$"$ and d$2$ is $"+$ d$2.$getValue$())$;

d$1.$setValue$(3)$;

System.out.println$(",$ d$1$ is $"+$ d$1.$getValue$()$

$"$ and d$2$ is $"+$ d$2.$getValue$())$;

$\}$

$\}$

a$.d1$ is $2$ and $d2$ is $2,d1$ is $3$ and $d2$ is $3$

b$.d1$ is $2$ and $d2$ is $2,d1$ is $2$ and $d2$ is $3$

c$.d1$ is $1$ and $d2$ is $2,d1$ is $1$ and $d2$ is $3$

d$.d1$ is $1$ and $d2$ is $2,d1$ is $3$ and $d2$ is $3$