of supervisors meets and confers pursuant to the Meyers-Milias-Brown Act (Chapter 10 (commencing with Section 3500) of Division 4 of Title 1) with any recognized employee organization that represents county employees who are safety members, the parties may agree, pursuant to a memorandum of understanding, to any of the following:

(A) Whether the employees shall be required to pay all or part of the employer’s contributions required to fund the benefits of Section 31664.1, the amount or percentage of that contribution, the method that the contribution is made, and the commencement date, which may predate the effective date of the memorandum of understanding.

(B) Subject to an agreement reached pursuant to Section 31484.9, whether the employees shall be required to pay all or part of the employer’s contributions required to fund the benefits of Section 31664.2, the amount or

percentage of that contribution, the method that the contribution is made, and the commencement date, which may predate the effective date of the memorandum of understanding.

(C) Changing any of those conditions described in subparagraph (A) or (B), including, but not limited to, increasing or reducing, for any years, the portion and the amount of the employer’s contributions that employees are required to pay.

applicable to its employees who are safety members pursuant to a memorandum of understanding under the Meyers-Milias-Brown Act with any recognized employee organization that represents district employees who are safety members on any of the matters described in subdivision (b).