Which statement is an appropriate entry for the outline Business Case heading within the Project Brief?

A.
10 year service contract should be agreed with the selected service provider.
B.
External consultants were employed to conduct a feasibility study to identify the options, their likely costs
and benefits.
C.
The project will run for two years and the benefits will be realized over 1 years.
D.
The project should be split into four management stages.