please do both questions

Question 12 (1 point) Which of the following is not a principal type of business activity? operating investing marketing financing Question 13 (1 point) Assume a business has received cash in advance of services being performed, and it has credited a liability account to record the received amount. What adjustment entry will the business need to record after the service has been performed? debit Deferred Revenue and credit Accounts Receivable. debit Deferred Revenue and credit Cash debit Deferred Revenue and credit Service Revenue credit Deferred Revenue and debit Service Revenue