Write a program in ST that will keep count the number of people entering and leaving the exhibition area, keeping an eye on the total and switching on the buzzer and orange and red lights as described. $(20$ marks total$)$ i$.$ Cut and paste your variables definition as you typed it into the editor. Marks will be lost for lack of proper logical grouping and commenting. $(5$ marks$)$ ii$.$ Cut and paste your program as you entered it into the editor, displaying line numbers. $(10$ marks$)$ iii. Explain your program briefly, but completely in narrative form, referring to the line numbers above. $(5$ marks$)$ e$)$ Show that your implementation achieves the required function