O A. A cost driver is a cost that changes in total in proportion to changes in the related level of total activity or volume For xample, the tons of steel needed to produce a vehidle is a driver of the total coot for that vohidle O B. Acoet driver is a factor aflecting direct or indirect cost classifications. For example, the availability of infomation-gthering technology is a driver as to whether certain low-cost materials used in the manuflacturing process is considered direct or indirect oost of the same plant. assembied is a driver of the costs of steering wheels on a motor wehicle assembly line O C. A cost deiver is a cost that is related to a particular cost object but cannot be traced to in an economically feasiblewiy, such as the salary of a plant manager who oversess production of many diferent types of laury cans produced at 30 p 9 2