In the discretion of the Authority any Bonds issued under the provisions of this Act may be secured by a trust agreement by and between the Authority and a corporate trustee or trustees, which may be any trust company or bank in the State of Illinois having the powers of a trust company. The Bond resolution providing for the issuance of Bonds so secured shall pledge the revenues to be received by the Authority, including any or all of the revenues specified in Section 10(c) of this Act, may contain such provisions for protecting and enforcing the rights and remedies of the Bondholders as may be reasonable and proper and not in violation of law, including particularly such provisions as have hereinabove been specifically authorized to be included in any Bond resolution of the Authority, and may restrict the individual right of action by Bondholders. In addition to the foregoing, any trust agreement may contain such other provisions as the Authority may deem reasonable and proper for the security of the Bondholders. All expenses incurred in carrying out the provisions of the trust agreement may be treated as a part of the cost of the operation of an Education Loan program.