Night Shades, Inc. (NSI), manufactures biotech sunglasses. The variable material cost is $10.48 per unit, and the variable labor cost is $6.89 per unit. a. What is the variable cost per unit? b. Suppose NSI incurs fixed costs of $870,000 during the year in which total production is 280,000 units. What are the total costs for the year? c. If the selling price is $49.99 per unit, does NSI break even on a cash basis? If depreciation is $490,000 per year, what is the accounting break-even point