Which of the Following Best Explains a 'Handing Invoices Procedure

Multiple Choice

Which of the following best explains a 'handing invoices procedure'? 

A)  A procedure incorporating a two-way matching principle (order matches delivery document and delivery document matches with invoice) . 
B)  A procedure incorporating a three-way matching principle (order matches delivery document, delivery document matches with invoice, invoice matches the order) . 
C)  A procedure incorporating a two-way matching principle (delivery document matches with invoice and invoice matches the order) . 
D)  A procedure incorporating a four-way matching principle (order matches delivery document, delivery document matches with invoice, invoice matches the order, invoice is paid) .