付款条件的英文表达 — 国际贸易选择题
题目
业务员需在函电中写明「凭30天期付款交单方式付款」这一支付条款。下列哪项英文表达最准确、最符合国际贸易函电惯例？
A. Payment shall be made by D/P at 30 days after sight.
B. Payment shall be made by D/A at sight upon confirmation.
C. Payment shall be made by T/T within 30 days after shipment.
D. Payment shall be made by L/C at 30 days after date of invoice.