Differential Analysis for a Discontinued Product The condensed product-line income statement for Northern Lights Company for the month of August is as follows: Fixed costs are 30% of the cost of goods sold and 15% of the selling and administrative expenses. Northern Lights Company assumes that fixed costs would not be materially affected if the Socks line were discontinued. a. Prepare a differential analysis dated September 14 to determine if Socks should be continued (Alternative 1) or discontinued (Alternative 2). If an amount is zero, enter " 0 ". If required, use a minus sign to indicate a loss. b. Should the Socks line be retained