[The following information applies to the questions displayed below] Preble Company manufactures one product. Its variable manufacturing overhead Is applied to production based on direct labor-hours and lts standard cost card per unit Is as follows: Direct material: 4 pounds at $8.00 per pound 32.00 Direct labor: 2 hours at $12.00 per hour Varlable overhead: 2 hours at $6.00 per hour 24.00 12.00 Total standard variable cost per unit 68.00 The company also established the following cost formulas for its selling expenses: Variable Cost Monthl per Unit Sold Fixed Cost per Advertising Sales salaries and commissions Shipping expenses $320,000 $120,000 $10.00 $3.00 The planning budget for March was based on producing and selling 32.000 units. However, during March the company actually produced and sold 37000 units and incurred the following costs: a. Purchased 160,000 pounds of raw materials at a cost of $7.40 per pound. All of this material was used in production. b. Direct-laborers worked 66,000 hours at a rate of $13.00 per hour c. Total variable manufacturing overhead for the month was $405,000. d. Total advertising, sales salaries and commissions, and shipping expenses were $321,000, $405,240, and $127,000, respectively