5. An additional risk borne by the seller when granting a credit to the buyer is that the latt er will not ( ) = A. accept the bill B. take up the documents C. take delivery D. make payment at maturity 6. ( ) is the reason why international trade first began. A. Uneven distribution of resources B. Patterns of demand C. Economic benefits D. Comparative advantages 7. A facility in fund arrangement for buyers or sellers is referred to ( ) . A. trade finance B. sale contract C. letter of credit D. bill of exchange