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: Multiple Choice Both direct materials and rent expense are variable costs. Direct materials is a fixed cost and rent expense is a variable cost. Both direct materials and rent expense are fixed costs. Direct materials is a variable cost and rent expense is a fixed cost. Both direct materials and rent expense are mixed costs.