World Appliance sells household appliances on credit to its customers. Typically, on purchases over $500 and under $1,000, the customer must pay within 90 days. On purchases over $1,000, World Appliance provides financing for 24 months. Which revenue method is likely to be used by the company for sales on its extended financing plan?

A) time of sale method

B) Percentage of completion method

C) Completion of contract method

D) installment method