Company manufactures three models of office chairs: economy, basic and deluxe.

Economy Basic Deluxe

Sales price $($per unit$)$ $$150$ $$210$ $$320$

Variable manufacturing costs $($per unit$)$ $$30$ $$90$ $$200$

Variable selling costs $($per unit$)$ $$30$ $$35$ $$40$

Unavoidable Allocated Fixed manufacturing costs $($per unit$)$

$$60$

$$50$

$$55$

If Sandy has excess capacity, and there is unsatisfied demand for all three products, which model should they produce?