What does the following code do if variable s is a character vector?

n $=0$;

for x$=$s

if x$<=\text{'}$Z$\text{'}$ && x$>=\text{'}$A$\text{'}$

n$=$n$+1$;

end

end

Question $21$ options:

A$)$

The script will count the number characters other than the upper case alphabets.

B$)$

The script will count the number of upper case alphabets in the character vector $.$

C$)$

The script will count the number of alphabets in the character vector $.$

D$)$

The script will count the number of characters other than alphabets.