2023 Cayley Problem 12

A 6 m by 8 m rectangular field has a fence around it. There is a post at each of the four corners of the field. Starting at each corner, there is a post every 2 m along each side of the fence. How many posts are there?

\textbf{(A)}\ 12\quad \textbf{(B)}\ 14\quad \textbf{(C)}\ 16\quad \textbf{(D)}\ 18\quad \textbf{(E)}\ 20

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.