To Change a Supplier's Currency After Entering Historical Invoices and Before

To change a supplier's currency after entering historical invoices and before finishing the history you must -

A) delete the supplier record and re-enter it
B) edit the currency selection
C) select the correct currency for later invoices and it will be changed for the supplier overall
D) pay historical transactions, clear paid transactions, remove the supplier record, re-enter the supplier with the correct currency selection and re-enter the historical invoices