2016 Cayley Problem 2

Maya asked the 20 math teachers at her school to tell her their favourite shape. She represented their answers on the bar graph shown. The number of teachers who *did not* pick "Square" as their favourite shape was

\textbf{(A)}\ 14\quad \textbf{(B)}\ 12\quad \textbf{(C)}\ 15\quad \textbf{(D)}\ 16\quad \textbf{(E)}\ 13

If there are no answer choices shown, enter a numerical answer.

Full credit to this problem is given to the CEMC, you may view all Cayley contests here.