Consol Co. makes cardboard boxes. During the most recent accounting period, Consol paid $60,000 for raw materials, $48,000 for labor, and $52,000 for overhead costs. Consol completed and sold 400,000 boxes. Selling expenses amounted to $10,000, and general and administrative expenses amounted to $30,000. The company wishes to earn a gross margin equal to 40% of product cost. (Hint: Since Consol Co. completed and sold 400,000 boxes (Sold everything they produced), Product costs would equal to the Cost of goods sold.) REQUIRED: a. How much is product cost? I b. How much is period cost? c. How much is gross margin? d. What is the selling price per box? e. How much is the operating income