Answer: B

Foreign exchange is divided into spot foreign exchange and forward foreign exchange according to the delivery period of the transaction. Spot foreign exchange, also known as spot foreign exchange, refers to the foreign exchange that is delivered on the same day or within two business days after the foreign exchange transaction is completed; forward foreign exchange, also known as forward foreign exchange, refers to the signing of a sales contract at an agreed exchange rate, at an agreed time in the future. FX for delivery.