Excellon Automation, a U$.$S$.$ manufacturer, engages Tang, a Taiwan national, to promote its products in Taiwan and help secure Taiwanese customer orders for Excellon, with a percentage commission to be paid to Tang on the value of each order accepted by Excellon from a Taiwanese customer. This is most likely

a$.$ a distributor relationship

b$.$ a representative or agent relationship

c$.$ an employee relationship

d$.$ an import$/$export relationship