If the director decides to pay any portion of or all of the prizes in the form of installments over a period of years, the director shall provide for the payment of all such installments for any specific lottery game by one, but not both, of the following methods:

(1) The director may enter into contracts with any financially responsible person or firm providing for the payment of such installments; or

(2) The director may establish and maintain a reserve account into which shall be placed sufficient moneys for the director to pay such installments as they become due. Such reserve account shall be maintained as a separate and independent fund outside the state treasury.