Mary sells coffee for $3 per cup. The Variable Cost for each cup she sells is $1. She also has Fixed Costs of $300. If Mary sells 400 cups of coffee, what is her total Contribution Margin? __________ And what is her total Net Operating Income? __________ $800 Contribution Margin; $500 Net Operating Income $1,200 Contribution Margin; $300 Net Operating Income $300 Contribution Margin; $1,600 Net Operating Income $400 Contribution Margin; $800 Net Operating Income