$1.$ Assume there are no transportation costs. Go to the tab $$maximize retailer profit$$ in the Excel file and answer the following questions. $(0\mathrm{.}4$ points each$)$

a$)$ What is the optimal order quantity for the retailer $($restaurant$)?$

b$)$ What is the optimal production quantity for the wholesaler $($supplier$)?$ Think about this, what is driving this?