; and (iv) not later than 14 days after receipt of a request for a sentence reduction submitted by the defendant or on the defendant’s behalf by a designated representative of the defendant, process the request; (B) in the case of a defendant who is physically or mentally unable to submit a request for a sentence reduction pursuant to subsection (c)(1)(A)— (i) inform the designated representatives of the defendant that they may prepare and submit on the defendant’s behalf a request for a sentence reduction pursuant to subsection (c)(1)(A); (ii) accept and process a request for sentence reduction that has been prepared and submitted on the defendant’s behalf by the designated representatives of the defendant under clause (i); and (iii) upon request from the defendant or a designated representative of the defendant, ensure that the Bureau of Prisons employees assist the defendant in the preparation, drafting, and submission of a request for a sentence reduction pursuant to subsection (c)(1)(A); and (C) ensure that all the Bureau of Prisons facilities regularly and visibly post, including in prisoner handbooks, staff training materials, medical facilities, and facility law libraries, and make available to prisoners upon demand, notice of— (i) a defendant’s ability to request a sentence reduction pursuant to subsection (c)(1)(A); (ii) the procedures and timelines for initiating and resolving requests described in clause (i)