I want the final answer without explanation please.The output of the following code is:

varx$=5$;

vary$=5"$;

if $(x>y)x>yx=y+=25x"(x$

$\{$

alert$("x")$;

$\}$

else $if(x>y)$

$\{$

alert$("x>y")$;

$\}$

else

alert$("x=y")$;

$\}$

The output $of$ the following code $is$:

$Sunse{t}_{i}nt+=25$;

echo $va{r}_d$ump$($$$unse{t}_{i}nt2)$;

Select one:

$a.$ undefined

$b.25$

$c.$ Null

$d.$ int$(25)$