northwest fur co. started 2021 with $98,000 of merchandise inventory on hand. during 2021, $550,000 in merchandise was purchased on account with credit terms of 3/15, n/45. all discounts were taken. purchases were all made f.o.b. shipping point. northwest paid freight charges of $7,700. merchandise with an invoice amount of $4,300 was returned for credit. cost of goods sold for the year was $362,000. northwest uses a perpetual inventory system. assuming northwest uses the gross method to record purchases, what is the cost of goods available for sale? multiple choice $656,800. $651,400. $635,029. $634,900.