37 Article 15, Regulations Governing the Establishment and Management of Customs Brokers: In case of
the cargoes eligible to be released through “C1” customs clearance mode, the hard copy of the Customs Declaration and its supporting documents should be properly filed in the customs broker's records within the required “preservation period”. How long is this “preservation period”?
(A) Six months
(B) Twelve months
(C) Eighteen months
(D) Twenty-four months