单选题 You are requested to send us ______ to authenticate the cable L/C issued by your bank in the future.
A. your specimen signatures book B. your telegraphic test key
C. your tariffs D. your terms and conditions

【正确答案】 A

【答案解析】由银行开出的电开信用证需要签名进行鉴别真假。specimen signatures book签名样本。telegraphic test key电报测试密匙。terms and conditions条款。tariffs关税。