Cullumber Enterprises is considering manufacturing a new product. It projects the cost of direct materials and rent for a range of output as follows. Determine the relevant range of activity for this product based on the cost behavior of each input. The relevant range of activity for this product units. (c) Calculate the unit variable costs within the relevant range. (Round answer to 2 decimal places e.g. 2.25.) Unit variable cost for direct materials $ per unit eTextbook and Media Attempts: 0 of 2 (d) Indicate the fixed cost within the relevant range. Fixed cost $