III (click the kon in vire the dain) Reequinement argin (variable costing) income statements for Sea Shades for the year incile the difference between the two statements. promotion that costs $165,000 would increase sales to 210,000 goggles. Should the company go ahy Data table III (click the kon in vire the dain) Reequinement argin (variable costing) income statements for Sea Shades for the year incile the difference between the two statements. promotion that costs $165,000 would increase sales to 210,000 goggles. Should the company go ahy Data table