Christensen Corporation Christensen Corporation is a wholesaler that sells a single product. Management has provided the following cost data for two levels of monthly sales volume. The company sells the product for $173.00 per unit. Sales Volume Cost of Goods Sold Sllng & Administrative Costs Total Costs 4,010 units 5,010 units S307,567S384,267 317993 5337,173 5625,560$721,440 1) For the total costs including both COGS and S&A costs, using high-low method to identify the cost formula. 2) What is the total variable costs and contribution margin when 4,350 units are sold