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Best Detroit Asphalt Inc., a manufacturer of premium quality asphalt, has given you the following data as is requesting your help Tons of asphalt produced and sold 220,000 Sales revenue $924,000 Variable manufacturing expense $297,000 Fixed manufactunng expense $280,000 Vanable selling and admin expense $165,000 Fixed selling and admin expense $82,000 Net operating income $100,000 Required a Calculate the company's unit contribution margin I b. Calculate the company's unit contribution ratio c. If the company increases its unit sales volume by 5% without increasing its fixed expenses, what would the company's net operating income be