In the Red Tomato example, assume that a $$1$ discount results in a $100\%$ increase in

consumption in any given month and $20\%$ of demand for two subsequent months is moved

forward. Using Excel Solver, decide whether Red Tomato should $($i$)$ not offer promotion, $($ii$)$ offer

promotion in January, or $($iii$)$ offer promotion in April to maximize its profit.