; disclosure (A) In general An investigator who receives any documentary material, answers to interrogatories, or transcripts of oral testimony under this section shall transmit them to the custodian. The custodian shall take physical possession of such material, answers, or transcripts and shall be responsible for the use made of them and for the return of documentary material under paragraph (4). (B) Preparation The custodian may cause the preparation of such copies of such documentary material, answers to interrogatories, or transcripts of oral testimony as may be required for official use by any investigator, or other officer or employee of the Department of Justice. Such material, answers, and transcripts may be used by any such authorized investigator or other officer or employee in connection with the taking of oral testimony under this section. (C) No examination Except as otherwise provided in this subsection, no documentary material, answers to interrogatories, or transcripts of oral testimony, or copies thereof, while in the possession of the custodian, shall be available for examination by any individual other than an investigator or other officer or employee of the Department of Justice authorized under subparagraph (B). The prohibition in the preceding sentence on the availability of material, answers, or transcripts shall not apply if consent is given by the person who produced such material, answers, or transcripts, or, in the case of any product of discovery produced pursuant to an express demand for such material, consent is given by the person from whom the discovery was obtained. Nothing in this subparagraph is intended to prevent disclosure to the Congress, including any committee or subcommittee of the Congress, or to any other agency of the United States for use by such agency in furtherance of its statutory responsibilities. (D) Examination by certain persons While in the possession of the custodian and under such reasonable terms and conditions as the Attorney General shall prescribe— (i)