Concept:Balance at the end of the period = total income − total expenses.Explanation:Income items: Fines =20,000, Market rates =120,000, Park collections =100,000.Total income =20,000+120,000+100,000=240,000.Expense items: Salaries =60,000, Maintenance of vehicles =49,000.Total expenses =60,000+49,000=109,000.Balance =240,000−109,000=131,000.Thus, the balance at the end of the period is Le 131,000.Answer:Le 131,000, i.e., option C.