; and (ii) not more than 18 square feet in size; (B) of any shape that the Trustees of the Center determine to be appropriate; and (C) placed at a location within the Center approximate to the Eisenhower Theater that the Trustees of the Center determine to be appropriate. (3) Funding (A) In general No Federal funds may be used to design, procure, or install the plaque. (B) Exception Subparagraph (A) shall not affect the payment of salaries, expenses, and benefits otherwise authorized by law for members and employees of the Center who participate in carrying out this subsection. (4) Private fundraising authorized (A) In general The Center may solicit and accept private contributions for the design, procurement, and installation of the plaque. (B) Accounting The Center may— (i) establish an account into which any contributions received pursuant to subparagraph (A) shall be deposited; and (ii) maintain documentation of any contributions received pursuant to subparagraph (A).