Delivery warehouse is a futures service organization that provides delivery service and generates standard warehouse receipts when futures products enter the physical delivery link. In China, the delivery warehouse refers to the delivery place designated by the futures exchange for physical delivery of futures contracts. The delivery of futures trading is organized by the futures exchange. The futures exchange shall not limit the total amount of physical delivery, and shall sign an agreement with the delivery warehouse to clarify the rights and obligations of both parties. Option c is wrong.