Among these 10 situations, what form of documentary payment is the most suitable in terms of management, security and cost?

- A French company sells 85,000 EUR worth of goods to an Australian company.

-A French company sells agricultural machinery to an Ivorian importer, but has no confidence in it because of the tense political climate in the Ivory Coast.

- A food company receives an order for dairy products from a Vietnamese company. As usual, it subcontracts part of the order to an Italian company that wants to secure its payment.

- A textile company buys cotton from its usual trader. The latter needs to finance the harvest from Malian producers.

- A French import-export company receives an order for construction materials from an African company. Since it does not produce certain materials, it uses a Swedish supplier, but does not want the importer to know this. The Swedish supplier would also like to secure payment. - The South Korean company Kim Yuan supplies a French company with computer equipment for EUR 120,000.

- An American importer places an order for food products with a large French company with which a recent business relationship seems to be developing. He would like to adopt a payment covering a possible default of the exporter. - A French company has regular business with a Japanese customer with whom no problems have been recorded. Both parties know each other.

- A commercial contract is concluded between a French spirits trader for the annual supply of an Asian distributor by full container every three months. - A French company receives an order for synthetic perfumes and dyes from a Nigerian cosmetics company for an amount of EUR 500,000