Exercise 3.9 Variable, Fixed, and Mixed Costs Classify the following costs of activity inputs as variable,fixed, or mixed. Identi the associated activity driver that allow you to define the cost behavior. For e IVE 2 mixed. Identify the activity xample resoure input is "cloth in a shirt." The activity would be "sewing shirts," thesu cost "variable," and the activity driver "units produced." Prepare your answers in the followit Activity Cost Behavior Activity Driver Sewing shirts Variable Units produced a Flu vaccine b. Salaries,equipment, and materials used for moving materials in a factory c. Forms used to file insurance claims d. Salaries, forms, and postage associated with purchasing e. Printing and postage for advertising circulars f. Equipment, labor, and parts used to repair and maintain production equipment g. Power to operate sewing machines in a clothing factory h. Wooden cabinets enclosing audio speakers