付款条件的英文表达 — 国际贸易选择题

卖方在催款函中要求买方将货款通过电汇汇至指定账户，且希望在装船后30天内收到全款。下列英文付款条款表述最准确、最符合外贸函电惯例的是哪一项？ A. Payment shall be made by T/T within 30 days after shipment for the full invoice value. B. Payment shall be made by L/C at 30 days after bill of lading date. C. Payment shall be made by D/P at sight upon presentation of documents. D. Payment shall be made by M/T within 30 days before shipment for half of the invoice value.