MSFT Company produces a single product with the following costs Direct materials $15 per unit Direct labor $6 per unit Manufacturing $39.900 overhead Last year, MSFT produced 2.100 units and sold 2,000 units at a selling price of $120 each. Total selling and administrative costs were $150,000 What was MSFT's gross margin per unit last year? o sjao per unit $40.00 per unit 576.19 per unit O $80.00 per unit O None of the above