Wren Company produces three products with the following characteristics: Planned unit sales Price per unit Variable cost per unit Regular Custom Deluxe 18,000 12,000 10,000 16 20 24 3 6 8 Total fixed costs at Wren Company are $421,500 per year. If Wren Company faces a tax rate of 20% and has a target after tax income of $281,000 which of the following is the required unit sales? Select one: a. Regular - 22,500; Custom - 15,000; Deluxe - 12,500 b. Regular - 12,250; Custom - 9,000; Deluxe - 6,500 c. Regular - 24,750; Custom - 16,500; Deluxe - 13,750 d. Regular - 13,500; Custom - 9,000; Deluxe - 7,500