how does Ariba network help reduce invoice processing errors? Note: there are 2 correct answers to this question

how does Ariba network help reduce invoice processing errors? Note: there are 2 correct answers to this question
A . suppliers can "flip" a purchase order (PO) into an invoice and most fields are filled automatically based on the information from the PO
B . Ariba Network performs a three-way match to ensure the invoice matches the purchase order
C . certain invoice fields can be configured with tolerance to be validated on Arbia network before the invoice reaches SAP arbia buying and invocing
D . suppliers use Ariba network to manage the approval process for invoices

Answer: B,C