Which of the following pairs are correctly classified as variable costs and fixed costs, respectively? A) rent - fixed; depreciation- variable B) depreciation - fixed; debt interest - variable C)...

Which of the following pairs are correctly classified as variable costs and fixed costs, respectively? A) rent - fixed; depreciation- variable B) depreciation - fixed; debt interest - variable C) depreciation - fixed; materials - variable D) materials - fixed; factory labor - variable E) debt interest - fixed: advertising/marketing - variable