We confirm having accepted your order No. C109 for 1,400 "Hero" brand men’s shirts. You are kindly requested to open an irrevocable sight Letter of Credit in our favor __________(时间不晚于2019年5月5日).
A.
on May 5, 2019
B.
before May 5, 2019
C.
on or before May 5, 2019
D.
on and after May 5, 2019
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举一反三
【单选题】After long and hard work, the police at last discovered the ________ of the baby found by the side of a road. [ ]