Which of the following is correct with respect to the design and use of business documents?

A、Thedocumentsshouldbeinpaperformat.;
B、Documentsshouldbedesignedforasinglepurposetoavoidconfusionintheiruse.;
C、Documentsshouldbedesignedtobeunderstandableonlybythosewhousethem.;
D、Documentsshouldbeprenumberedconsecutivelytofacilitatecontrolovermissingdocuments.