How Can an Exporter Use a Letter of Credit to Obtain

How can an exporter use a letter of credit to obtain financing?

A) There is an active secondary market for letters of credit,and an exporter can sell a letter of credit on that market.
B) Since a letter of credit is an assurance of payment of a specific amount in the future,an exporter can accumulate several letters of credit,securitize those letters of credit,and sell interests in the securitized letters of credit.
C) Since a letter of credit represents only the possibility of future payment,a letter of credit is of no use to an exporter in obtaining financing.
D) Since a letter of credit represents a future payment to an exporter for goods sold,the exporter can use the letter of credit as collateral for a loan.