5) The Dean Company produces and sells a single product: a laser printer. The following data refer to the year just completed: Beginning inventory so Units produced 20,000 Units sold 19,000 Sales price per unit $350 Selling and administrative expenses: Variable per unit $10 Fixed (total) $225,000 Manufacturing costs: Direct materials cost per unit $190 Direct labour cost per unit $40 Variable overhead cost per unit $25 Fixed overhead (total) $250,000 Assume that direct labour is a variable cost. Required: a) Compute the cost of a single unit of product under the variable costing approaches. b) Prepare an income statement for the year using variable costing