both please

sales revenue and operating expenses net income and operating expenses sales revenue and cost of goods sold plus operating expenses sales revenue and cost of goods sold Question 18 2 pts The primary difference between a periodic and perpetual inventory system is that a periodic system: records the cost of the sale on the date the sale is made keeps a record showing the inventory on hand at all times determines the inevntory on hand only at the end of the accounting period provides better control over inventories