索取样册、价格表的写法 — 国际贸易选择题
题目
某机电产品进出口公司拟致函德国一家进口商建立业务关系，并在信中索取对方的商品样册（catalogue）与最新价格表（price list）。下列四句英文表述中，哪一句在语气礼貌与商务函电规范上均恰当无误？
A. Send us your latest catalogue and price list at once.
B. We shall be grateful if you could send us your latest catalogue and price list.
C. You must mail your catalogue and price list to us without delay.
D. If you don't send your catalogue and price list, no business will be done.