At the time of making a sale or receiving the initial deposit hereunder, the cemetery company shall deliver to the person to whom such sale is made, or who makes such deposit, an instrument in writing which shall specifically state that the net income of the care and maintenance trust fund shall be used solely for the care and maintenance of the cemetery, for reasonable costs of administering such care and maintenance and for reasonable costs of administering the trust fund. (1975, c. 768, s. 1.)