18. 下列書信內容屬何種函件？〝All of the term s and conditions are accep ted by us. The s ight credit wi ll be issued next week.〞
(A)acceptance letter
(B)quotation
(C)sales confirmation
(D)counter offer。

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統計： A(7), B(0), C(2), D(2), E(0) #2142931