When Buying from a Supplier in France,LTD,based in Cleveland,Ohio,has Arranged

When buying from a supplier in France,LTD,based in Cleveland,Ohio,has arranged for its bank to pay the supplier the cost of the desired material when it has passed customs in the United States.Which of the following terms is this type of bank promise called?

A) banker's acceptance
B) bank trust service
C) certified check
D) letter of credit
E) currency exchange agreement