What is the most accurate rough order of magnitude (ROM)?

A.In

the Initiation phase, the estimate is in the range of +/- 50%.

B.In the Planning phase, the estimate is in the range of +/- 50%.

C.In the Monitoring and Controlling phase, the estimate is in the range of +/- 15%.

D.In the Closing phase, the estimate is in

the range of +/- 15%.