Which of the following is not used as a cost estimating technique during the project planning stage?

A.
Delphi technique

B.
Expert Judgment

C.
Program Evaluation Review Technique (PERT) charts

D.
Function points (FP)

Explanation:
“Methods and techniques for cost estimation: Experts’ evaluation Delphi Bottom-up approaches
Empirical models COCOMO Function Points Combining Methods”