During Year 6, Pacilio Security Services experienced the following transactions: Paid the salaries payable from Year 5. On March 1, Year 6. Pacilio established a $100 petty cash fund to handle small expenditures. Paid $4,800 on March 1, Year 6 , for a one-year lease on the company van in advance. Paid $7,200 on May 2, Year 6, for one year's office rent in advance. Purchased $400 of supplies on account. Purchased 100 alarm systems for $28,000 cash during the year. Sold 102 alarm systems for $57,120. All sales were on account. Record the cost of goods sold related to the sale from Event 7 using the FIFO method