Given the following code:

$```$

def smallest$\_$of$\_$three$($num$1,$ num$2,$ num$3)$:

$"""$

returns the smallest of three numbers

$"""$

if num$1$ num$2$:

if num$1$ num$3$:

return num$1$

else:

if num$2$ num$3$:

return num$2$

return num$3$

a $=4$

b $=10$

c $=3$

smallest$\_$of$\_$three$($a$,$ b$,$ c$)$

$```$

What would be the values of num$1,$ num$2,$ and num$3$ when smallest$\_$of$\_$three is called?