The L/C stipulates that the quantity is 10,000 metric tons of bulk goods with a total amount of 900,000 US dollars. It does not indicate whether it can be short-loaded or not allowed to be shipped in batches. The seller’s delivery should be ( ) A. Both the quantity and the total amount can be increased or decreased by 5%. B. The quantity and total amount can be increased or decreased by less than 10%. C. The quantity and total amount cannot be increased or decreased. D. The quantity can be expanded by 5%, and the amount cannot exceed USD 900,000.