Consider the following piece of C code inside a file for a program:

$$extern int var$1=7$;

$$float var$2=1\mathrm{.}4142$;

$$void f$1($float var$3)\{$

$$float $*$var$4=$ &var$3$;

$//...$other commands

The following are CORRECT statements regarding the C statements above, EXCEPT:

var$2$ is a global variable defined in the second line for all functions in this file. $$

var$1$ is a global variable completely defined in the first line for this and all other files that include it$.$

var$4$ is a global pointer defined in the fourth line for all functions in this file. $$

var$3$ is a local variable defined in function f$1,$ just to be used by f$1.$