Question 5 7 pts An automobile dealer sells three models of a particular make of new car: EX-L, X-L, and X-1. EX-L is the model with the highest per unit contribution margin and X-1 has the lowest per unit contribution margin. Which one of the following events will always result in a decrease in the dealer's overall breakeven point for the dealership? A decision to outsource security for the dealership (showroom and storage lots) to an independent security service A decrease in the selling price of Model 1 An increase in the sales volume of Model EX-L relative to the sales of Models X-L and X-1 An increase in the production costs for Model EX-L