Joint costs are $10,000/day and result in: 40,000 gal/day of gasoline 20,000 gal/day of heating oil Selling prices: Gasoline sells for $1.60/gal, Heating oil sells for $1.80/gal, Separable processing costs:$4,000/day upgrades gasoline to a product that sells for $1.90/gal. Joint cost allocation for heating oil under the Gross Profit Margin method is closest h to: O 6,500$ 5,500$ 3,500$ 4,500$