3. Management was notified that the arrival of the shipment sent to the Paris office ---- because of a problem with customs.
(B) would be delayed
(C) have been delayed
(D) have delayed
왜 답이 B인가요?
was notified 보다 arrival의 지연이 더 과거니까
보기에는 없지만 had been delayed도 되는거 아닌가요?
would be delayed와
had been delayed 모두 가능한건가요?