; or (B) (i) (I) affirm the sentence of imprisonment originally deemed to be imposed; or (II) reduce the sentence of imprisonment; and (ii) commit the offender under any applicable provision of law. (4) Running of term The term of a sentence imposed under paragraph (3) shall run from the date of original commitment under this subsection. (d) Study upon commitment (1) In general Upon commitment of a prisoner sentenced to imprisonment under subsection (a) or (b), the Director, under such regulations as the Attorney General may prescribe, shall cause a complete study to be made of the prisoner and shall furnish to the Commission a summary report together with any recommendations which in the opinion of the Director would be helpful in determining the suitability of the prisoner for parole. (2) Contents A report under paragraph (1) may include— (A) data regarding the prisoner's previous delinquency or criminal experience; (B) pertinent circumstances of the social background, capabilities, and mental and physical health of the prisoner; and (C) consideration of such other factors as may be considered pertinent. (3) Study by Commission The Commission may make such other investigation relating to a prisoner as it may determine necessary. (e) Provision of information Upon request of the Commission, it shall be the duty of the various probation officers and agencies of the Federal Government to furnish the Commission— (1) information available to such officer or agency concerning any eligible prisoner or parolee