In Which of the Following Circumstances Must an Enterprise Fund

In which of the following circumstances must an enterprise fund be used to account for the activity?

A) A newly created electric utility fund will finance its operations by a charge to users based on kilowatt hours used.
B) To finance the acquisition of plant facilities, a newly created electric utility issues general obligation debt.
C) To finance the acquisition of plant facilities, a newly created electric utility issues revenue bonds that will be repaid solely from operations of the electric utility.
D) To acquire needed plant facilities, a newly created electric utility enters into long-term lease agreements.