In Performing a Review of His Client's Cash Disbursements,a Public

In performing a review of his client's cash disbursements,a public accountant uses systematic sampling with a random start.The primary disadvantage of systematic sampling is that population items

A) must be reordered in a systematic pattern before the sample can be drawn.
B) may occur in a systematic pattern,thus negating the randomness of the sample.
C) may occur twice in the sample.
D) must be replaced in the population after sampling to permit valid statistical inference.