Net Income Planning Night Hawk Corporation sells a single product for $150 per unit, of which $60 is contribution margin. Fixed costs total $240,000 and net income before income tax is $54,000. Round UP unit answers to the nearest unit, when applicable. Determine the following a. The present sales volume in dollars. $ b. The break-even point in units. units C. The sales volume in units necessary to attain a net income before income tax of $75,000. units d. The sales volume in units necessary to attain a net income before income tax equal to 10% of sales revenue. units e. The sales volume in units necessary to attain an after-tax net income of $54,000 if the tax rate is 20%. units