Following is a user$-$defined function in a $\backslash (\backslash$mathrm$\{$C$\}++\backslash )$ program:

$```$

int getSum$($int a$,$ int b$)$

$\{$

int s$=0$;

for$($int k$=$a;kb;k$++)$

s$+=$k;

return s;

$\}$

$```$

Which one of the followings is correct?

$\backslash ($ s $\backslash )$ is global variable

s is a static variable

$\backslash ($ s $\backslash )$ is a looping variable

s is local variable