which one of the following transactions is service revenue? please answer this question with the reason, thank you

PROBLEMS: SET B Journ. transa (LO 2 P2-1B Surepar Disc Golf Course was opened on March 1 by Bill Arnsdorf. The following selected events and transactions occurred during March: Mar. 1 Invested 60,000 cash in the business in exchange for ordinary shares. 3 Purchased Lee's Golf Land for 38,000 cash. The price consists of land 23,000, shed 9,000, and equipment 6,000. (Make one compound entry) Advertised the opening of the driving range and miniature golf course, paying advertising expenses of 1,300. 6 Paid cash 3,000 for a one-year insurance policy. 10 Purchased golf discs and other equipment for 1,050 from Parton Company payable in 30 days. 18 Received 440 in cash for golf fees recognized. 19 Sold 100 coupon books for 18 each. Each book contains 4 coupons that enable the holder to play one round of disc golf. 25 Declared and paid an 800 cash dividend. 30 Paid salaries of 250. 30 Paid Parton Company in full. 31 Received 200 cash for fees recognized. Surepar uses the following accounts: Cash, Prepaid Insurance, Land, Buildings, Equipment, Accounts Payable, Unearned Service Revenue, Share CapitalOrdinary, Dividends, Service Revenue, Advertising Expense, and Salaries and Wages Expense