Select cost information for klondike corporation is as follows: 1,000 units of output 2,000 units of output total cost/unit total cost/unit direct materials $4,000 $4.00 $8,000 $4.00 rent expense $2,000 $2.00 $2,000 $1.00 based on this information: direct materials is a fixed cost and rent expense is a variable cost. both direct materials and rent expense are fixed costs. both direct materials and utilities expense are mixed costs. both direct materials and rent expense are variable costs. direct materials is a variable cost and rent expense is a fixed cost.