In the past, the import and export of domestic enterprises could only be settled in U. S. dollars or third-party currencies. Changes in the exchange rate between the signing of the contract and the completion of the contract would cause the actual earnings of the enterprise to fluctuate. Now the bank has launched the RMB settlement business. The domestic currency, contract valuation and the main currency of the company's operations are consistent, and domestic companies can effectively understand the cost and income of the transaction before the contract is signed, thereby preventing exchange rate risks. As a result, companies using cross-border trade RMB settlement business will definitely increase. Which of the following is true and is the best prerequisite for the above argument? ? ['With the RMB settlement business of cross-border trade, the number of foreign trade companies will increase.', 'When developing trade with domestic enterprises, overseas companies are willing to use RMB as the settlement currency because the value of RMB remains stable.', 'With cross-border trade RMB settlement business, domestic companies can more easily carry out cross-border trade to all parts of the world.', 'Due to the huge domestic market space, more and more foreign companies are willing to trade with domestic companies.']