Which of the Following Is a Drawback of Relying Solely

Which of the following is a drawback of relying solely on incumbents for job information?

A) They lack in-depth knowledge of the tasks and duties of the job.
B) They have little information about actual time spent performing job tasks.
C) They may have an incentive to exaggerate what they do.
D) They are less accurate in reporting safety-related risk factors.
E) They are less familiar with the standard operating procedures involved in the job.