Which of the following is NOT a necessary factor for a successful management by objectives (MBO) program?

Which of the following is NOT a necessary factor for a successful management by objectives (MBO) program?
A) Management must follow through on employee performance evaluations by rewarding employees accordingly.
B) Top management must be committed to the MBO process and set appropriate objectives for the organization.
C) Managers and subordinates together must develop and agree on each individual's goals.
D) Employee performance should be conscientiously evaluated against established objectives.
E) Managers must conclude automatically that employees have produced at an acceptable level because they have reached their objectives.