Which of the following is not correct related with reference to PERT?

(A) Compels managers to plan their projects critically in considerable detail from beginning to the end and analyse all factors affecting the progress of the plan.

(B) Provides management a tool for forecasting the impact of schedule changes. The likely trouble spots are located early enough to take preventive measures or corrective actions.

(C) A considerable amount of data may be presented in precise manner. The task relationships are presented graphically for easier evaluation.

(D) The PERT time is based upon 5-way estimate and hence is the most objective time in the light of uncertainties and results in greater degree of accuracy in time forecasting.