(a) The chair and the members of the Geneva County Commission shall each be entitled to an expense allowance in the amount of one hundred fifty dollars ($150) per month which shall be paid out of the county general fund and shall be in addition to any and all other salary, compensation, and expense allowances now provided for by law.
(b) The chair and the members of the Geneva County Commission shall each be entitled to an expense allowance in the amount of two hundred fifty dollars ($250) per month which shall be paid out of the county general fund and shall be in addition to any and all other salary, compensation, and expense allowances now provided for by law. The expense allowance herein provided shall be effective automatically upon the next term of office of a county commissioner.