Grover Company has the following data for the production and sale of 2,000 units. per unit Sales price per unit $ 800 Fixed costs: Marketing and administrative $ 400,000 per period Manufacturing overhead $ 200,000 per period Variable costs: Marketing and administrative $ 50 Manufacturing overhead $ 80 Direct labor $ 100 per unit Direct materials $ 200 per unit per unit per unit What is the contribution margin per unit? $430 O $370 O $70 0 $320