with this question, I guessed but i don't know where it comes from

2012 2013 2014 Unit Data Beginning Inventory 0 ? ? Production 800 700 80 Sales 200 800 40 variable costs manufacturing cost per unit produced $900 $900 $900 marketing cost per unit sold produced $600 $600 $600 Fixed costs Manufacturing costs $450,000 $450,000 $450,000 Marketing costs $140,000 $140,000 $140,000 Using variable or direct costing, how much inventoriable cost is assigned to each unit produced in 2012? Correct! 900 Correct Answer 900 2012 2013 2014 Unit Data 0 ? ? 1000 800 1250 700 800 1500 Beginning Inventory Production Sales variable costs manufacturing cost per unit marketing cost per unit sold $900 $900 $900 $600 $600 $600 Fixed costs Manufacturing costs Marketing costs $450,000 $450,000 $450,000 $140,000 $140,000 $140,000 Using variable costing, what is the net income in 2012 if each unit sells for $3000? You Answered Correct Answer 460,000 2012 2013 2014 Unit Data Beginning Inventory 0 ? ? Production 1000 800 1250 Sales 700 800 1500 variable costs manufacturing cost per unit produced $900 $900 $900 marketing cost per unit sold produced $600 $600 $600 Fixed costs Manufacturing costs $450,000 $450,000 $450,000 Marketing costs $140,000 $140,000 $140,000 Using absorption costing, what is the cost of each unit produced in 2012? You Answered Correct Answer 1,350 margin of error +/- 1 2012 2013 2014 Unit Data Beginning Inventory o ? ? Production 1000 800 1250 Sales 700 800 1500 variable costs manufacturing cost per unit produced $900 $900 $900 marketing cost per unit sold produced $600 $600 $600 Fixed costs Manufacturing costs $450,000 $450,000 $450,000 Marketing costs $140,000 $140,000 $140,000 Using absorption costing, what is the operating income in 2012 is the selling price is $3000? You Answered Correct Answer 595,000 margin of error +/- 1 2012 2013 2014 Unit Data Beginning Inventory 0 ? ? Production 1000 800 1250 Sales 700 800 1500 variable costs manufacturing cost per unit produced $900 $900 ||$900 marketing cost per unit sold produced $600 $600 $600 Fixed costs Manufacturing costs $450,000 $450,000 $450,000 Marketing costs $140,000 $140,000 $140,000 Using variable costing, what is value of ending inventory in 2013? You Answered Correct Answer 270,000 margin of error +/- 1