we design an Als for a car dealer. Ine aldgram below shows the REA diagram for the sales activities of this car dealer. Only the economic resources, economic events and the relationships between these entities are modeled. The car dealer does not require down payments and allows installments. Some customers trade in an old car. Customers can only trade in one car per sale. Both used cars and new cars are classified as cars. Each car gets a unique tag. Specify the cardinalities for the four empty boxes on the diagram. stock-flow inflow min max economic event Trade Sale Car economic resource economic dual stock-flow event outflow max dual max stock-flow inflow