Intuit Inc. develops and sells software products for thepersonal finance market, including popular titles such asQuickbooks® and TurboTax®. Classify each of the following costs andexpenses for this company as either variable or fixed to the numberof units produced and sold:
| a. Packaging costs | |
| b. Sales commissions | |
| c. Property taxes on general offices | |
| d. Shipping expenses | |
| e. Straight-line depreciation of computerequipment | |
| f. President’s salary | |
| g. Salaries of software developers | |
| h. Salaries of human resources personnel | |
| i. Wages of telephone order assistants | |
| j. Costs of providing online support | |
| k. Users' guides | |
