Question 15 1 pts Use the following cost data for two levels of monthly sales volume to determine the best estimate of total contribution margin when 4,300 units are sold. The company sells the product for $172.50 per unit. Hint: You need to use the high low method and your definition of CM. Sales volume (units). Cost of sales Selling and administrative costs. 4.000 5,000 $307,600 $384,500 $321,200 $337,000 $65,790 $121,260 $343,140 $411,080