If documents are produced or given to the Commission under this Part, the Commission:
(a) may take possession of, and make copies of, or take extracts from, the documents; and
(b) may keep possession of the documents for so long as is necessary for the purposes of the inquiry to which they relate; and
(c) while it has possession of the documents, must permit them to be inspected at all reasonable times by people who would be entitled to inspect them if they were not in the possession of the Commission.