Consider the Scala definitions:

object O $\{//$ O$1$

def f$($x: Int$)=\{//$ f$1,$ x$1$

def g$($x: Int$)=\{//$ g$1,$ x$2$

if $($x $==0)$ x $//$ x$3,$ x$4$

else x $+$ g$($x $-1)//$ x$5,$ g$2,$ x$6$

$\}$

g$($x$)//$ g$3,$ x$7$

$\}$

def g$($x: Int$)=$ f$($x $*2)//$ g$4,$ f$2,$ x$8$

$\}$

O$.$f$(2)//$ O$2,$ f$3,$ x$9$

Each line of code has a comment giving unique numbers to each occurrence of an identifier. Which one of the following statements is false?

Options:

x$3$ is statically bound to x$2.$

g$3$ is statically bound to g$4.$

f$2$ is statically bound to f$1.$

x$7$ is statically bound to x$1.$

O$2$ is statically bound to O$1.$