Each stabilization and marketing plan shall provide all of the following:
(a)
For the establishment of prices for market milk, whether or not such market milk is subsequently sold or distributed in another marketing area within this state where a stabilization and marketing plan is in effect.
(b)
That, if area of usage pricing is in effect, producers shall be paid not less than the minimum prices established for the marketing area wherein such market milk is ultimately sold or distributed.
(c)
That, if area of usage pricing is in effect and such market milk is subsequently sold or distributed in any place within the jurisdiction of this state where no stabilization and marketing plan is in effect, such market milk shall be paid by the handler to the producer at not less than the average of prices which are paid by handlers, whose plants are located within such area, to producers for market milk. If, however, no plants are located within such area, the price which shall be paid by the handler to the producer shall not be less than the average of prices which are paid by handlers to producers for market milk, at the plants in the nearest marketing areas adjacent to the area where such market milk is sold or distributed, as established by the stabilization and marketing plans in effect in such adjacent marketing areas.