Suppose in the Dorian production model that no minimum production limits are placed on the individual vehicle types. However, minimum production limits are placed on all cars and on all minivans. Specifically, if Dorian produces any cars, regardless of size, it must produce at least 1500 cars total. Similarly, if the company produces any minivans, it must produce at least 1000 minivans total. Modify the model appropriately and use Solver to find the optimal solution.