; (B) pay the administrative expenses of the Trust Fund from the assets in the Trust Fund; and (C) discharge their duties (including the voting of proxies) with respect to the assets of the Trust Fund solely in the interest of the Trust Fund and through it, the participants and beneficiaries of the programs funded under this Act— (i) for the exclusive purpose of— (I) providing zero-interest Federal student loans to existing and future borrowers; and (II) defraying reasonable expenses of administering the functions of the Trust Fund; (ii) with the care, skill, prudence, and diligence under the circumstances then prevailing that a prudent person acting in a like capacity and familiar with such matters would use in the conduct of an enterprise of a like character and with like aims; (iii) by diversifying investments so as to minimize the risk of large losses and to avoid disproportionate influence over a particular industry or firm, unless under the circumstances it is clearly prudent not to do so; and (iv) in accordance with Trust Fund governing documents and instruments insofar as such documents and instruments are consistent with this Act. (3) Prohibitions with respect to members of the Board No member of the Board shall— (A) deal with the assets of the Trust Fund in the member’s own interest or for the member’s own account; (B) in an individual or in any other capacity act in any transaction involving the assets of the Trust Fund on behalf of a party (or represent a party) whose interests are adverse to the interests of the Trust Fund or the interests of borrowers