Marquis Company uses a weighted average perpetual inventory system and has the following purchases and sales: Units Sold at Retail Date August 2 August 18 August 29 Activities Purchase Purchase Sales Units Acquired at Cost 10 units @ $26 = $260 15 units @ $28 = $420 12 units sold What is the amount of the cost of goods sold for this sale? (Round average cost per unit to 2 decimal places.) Multiple Choice $420.00 $680.00 $326.40 $316.00