63. 下列哪一項付款條件對賣方最有利？
(A)By D/P, draft drawn on buyerpayable at sight.
(B)Payment by draft payable 90 days after sight,documents against acceptance.
(C)By irrevocable L/C at 60 days afterB/L date.
(D)70% by sight L/C, 30% T/T before shipment 。

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