To update your order information from a third-party system using an XmlRpc call, you should
_______________.

A.
use the native sales_order.update API call with the url/api/xmlrpc/

B.
create a custom API resource which allows you to receive XmlRpc requests

C.
create a custom API adapter to receive XmlRpc requests

D.
create a custom API handler to process XmlRpc requests