Consider the following program. What is the correct assignment to temp at $????$ which will ensure that the correct result $($i$.$e$.$ x$^$exp$)$ is returned?

int power $($int exp, int x$)\{$

if $($exp$==0)$ return $1$;

else $\{$

int temp$=????$

if $($exp$\%2==0)$ return temp;

else return temp$*$x;

$\}$

$\}$

Question $2$Select one:

a$.$

power $($exp$/2,$ x$*$x$)$

b$.$

power $(($exp$-1)/2,$ x$*$x$)$

c$.$

power $(($exp$-1)/2,$ x$)*$ power $(($exp$-1)/2,$ x$)$

d$.$

power $($exp$/2,$ x$)*$ x

e$.$

None of the others.