Assume you have the following code for the "calcCir" user$-$defined function:

function circumference $=$ calcCir$($rad$)$

circumference $=2*$pi$*$rad;

end

You also have the following script using the "calcCir" function:

my$\_$vec $=(1$:$6)$;

c$\_$vec $=$ calcCir$($my$\_$vec$)$;

plot$($my$\_$vec, c$\_$vec, 'blue$*\text{'})$

title$(\text{'}$Circumference of a circle $($x$)$ as compared to its radius $($y$)\text{'})$

ylabel$(\text{'}$radius$\text{'})$

xlabel$(\text{'}$circumference$\text{'})$

What is wrong with the function?

I.The function calcCir can only be used for scalars. For use with vectors, $*$ must be changed to $.*$

II$.$In the script, 'blue$*\text{'}$ must be changed to $\text{'}$b$*\text{'}$

III.The semicolon in the calcCir function should be deleted

IV$.$You should specify the title, x label, and y label of a plot before you create it$.$

V$.$The x and y axis labels are swapped around