28 . Suppose that Lily Mac Photography has annual sales of $218 000 cost of goods sold of $123, 100 , average inventories of $1 250 , and average accounts receivable of $22 ,100 . Assuming that all of Lily Mac's sales are on credit , what will be the firm's operating cycle ? A . 40.54 days B. 45 13 days C . 41 .16 days D. 37 82 days