Concept:The debtor payment period shows the average number of days debtors take to pay. It is calculated using: Debtor payment period=Credit SalesDebtors×365Explanation:Here, Debtors =D120,000 and Credit Sales =D600,000.Substitute the values into the formula: Payment period=600,000120,000×365=0.2×365=73 daysAnswer:C. 73 days