Which of the Following Statements Is Correct Regarding the Use

Which of the following statements is correct regarding the use of a program evaluation and review technique (PERT) model? • It makes use of a probability model to arrive at a realistic estimate of time necessary for completion of the audit engagement. • It requires that activities are performed in sequence such that each task is completed before the commencement of the next activity. • It remains fixed once completed to act as a baseline for measuring the performance of the audit staff following completion of the engagement. • It begins with the auditor-in-charge identifying the overall scope and then breaking down the audit engagement into identifiable activity units.

A) 1 and 3 only
B) 1 and 4 only
C) 2 and 3 only
D) 2 and 4 only