Suppose that a product's value is $$1000.$ The manufacturer experiences a holding cost of $2\mathrm{.}5\%$ per month. The firm ships the product across country by truck, and it arrives seven days later. The shipping cost is $$80$ per unit. What is the holding cost on each unit shipped? $($Assume $30$ days per month.$)$

A$.$ $$0\mathrm{.}40$

B$.$ $$583$

C$.$ $$14\mathrm{.}00$

D$.$ $$0\mathrm{.}07$

E$.$ $$5\mathrm{.}00$