Carnico Advertising Inc. performs advertising services for several fortune 500 companies. The following information describes Carrico's activities during the current year. a. At the beginning of the year, customers owed Carrico $45,800 for advertising services performed dunng the previous year. During the current year, Camco performed an add $701,800 of advertising services on account. Carrico collected $708,700 cash from customers during the current year. b. At the beginning of the year, Carrico had $12,430 of supplies on hand for which it owed suppliers $8,150. During the year, Carrico purchased an additional $14,600 of supplieaccount. Carnco also paid $19,300 cash owed to suppliers for goods previously purchased on credit. Carrico had $2,230 of supplies on hand at the end of the year. c. Carnco's operating and interest expenses were $437,600 and $139,500, respectively