4. Lamar's company produces iron gates. Its costs have been analyzed as follows: Variable cost Materials S $30 per unit Manufacturing labor 3 hours per unit and $8 cost per hour Assembly labor 1 hours per unit and $8 cost per hour S3 per unit Packing materials Packing labor Shipping cost 20 minutes per unit and $6 per hour $10 per unit Fixed Costs Overhead labor Utilities Plant operation Selling price 4A) 4B) 4C) $50,000 per year $5,000 per year $65,000 per year $100 per unit calculate the break-even quantity Calculate the break-even revenue Show a profit at quantity of 6,000