What is $\text{'}$x$\text{'}$ in the below function?

$$v$$o$$i$$d$$f$$u$$n$$c$$t$$i$$o$$n$()\{$

$$t$$y$$p$$e$$d$$e$$f$$c$$h$$a$$r$(*(*$a$$r$$r$$f$$p$$t$$r$[3])())$;$$

$$a$$r$$r$$f$$p$$t$$r$$x$$;$$

$\}$

Question $4$ options:

$\text{'}$x$\text{'}$ is an array of three function pointers.

Error in $\text{'}$x$\text{'}$ declaration.

$\text{'}$x$\text{'}$ is a pointer.

$\text{'}$x$\text{'}$ is an array of three pointers.$$