XYZ Company is considering launching a new product line. The company expects to sell 10,000 units in the first year, with sales increasing by 20% each year for the next 3 years. The selling price per unit is $50, and the variable cost per unit is $30. Fixed costs are expected to be $200,000 per year for the next 4 years. The company has a tax rate of 30%.

a) Calculate the contribution margin per unit.
b) Calculate the breakeven point in units and dollars.
c) Calculate the net income for each of the first 4 years, assuming straight-line depreciation for any necessary assets.
d) Should the company launch the new product line? Explain your answer.