23) 10 PT Tristan Corporation, a merchandising company, reported sales of 4,800 units for July at a selling price of $269 per unit. The cost of goods sold (all variable) was $114 per unit and the variable selling expense was $6 per unit. The total fixed selling expense was $38,100. The variable administrative expense was $14 per unit and the total fixed administrative expense was $59,900. Required: a. Prepare a contribution format income statement for July. b. Prepare a traditional format income statement for July