The Completed-Contract Method (As Opposed to the Percentage-Of-Completion Method) of Accounting

The completed-contract method (as opposed to the percentage-of-completion method) of accounting for revenue from long-term construction contracts should be used in which of the following circumstances?

A) The contractor has been in business for many years and has completed many contracts in the past.
B) The contracts are of a relatively long duration.
C) Reasonable accurate estimates of the degree of completion can be made based on past experience.
D) Reasonably accurate estimates of the degree of completion cannot be made due to the lack of experience with similar types of contracts.