Most Project Life Cycles Share the Following Characteristics

Most project life cycles share the following characteristics:

A) cost and staffing levels are low at the start, higher at the end, and drop rapidly as the project nears an end.
B) the ability of stakeholders to influence final characteristics of the project's product is highest at the beginning and lowest at the end.
C) the probability of successfully completing the project is lowest at the beginning, so risk and uncertainty are also the highest at that point.
D) all of the above.