Show $me$ the steps $to$ solve

Super Auto Company rented a warehouse $in$ Halifax, $NSto$ store its engines valued $at$ $$500,000.$ The engines need $tobe$ shipped $to$ the Montreal, $QC,$ plant. The annual holding cost rate for auto engine has been estimated $at15\%.$ There are five shipping companies available. Their delivery time and costs are listed $in$ the table below. Which carrier $is$ most economical?

$\begin{array}{cc}\text{C}\text{a}\text{r}\text{r}\text{i}\text{e}\text{r}& \text{D}\text{e}\text{l}\text{i}\text{v}\text{e}\text{r}\text{y}\text{T}\text{i}\text{m}\text{e}(Days)\\ \text{C}\text{o}\text{s}\text{t}& A\\ 20& \text{\$}500\\ B& 15\\ \text{\$}800& C\\ 12& \text{\$}1200\\ D& 8\\ \text{\$}1600& E\\ 5& \text{\$}2000\end{array}$