1. Prepare an income statement based on the absorption costing concept. 2. Prepare an income statement based on the variable costing concept. YoSan Inc. Variable Costing Income Statement For the Month Ended July 31 \begin{tabular}{ll} \hline Line Item Description & Amount Amount \\ Sales & \end{tabular} Variable cost of goods sold: Inventory, July 31 Total variable cost of goods sold Manufacturing margin Variable selling and administrative expenses Contribution marqin Fixed costs: Fixed manufacturing costs Fixed selling and administrative expenses Total fixed costs Operating income $