The petition shall, among other things, contain or be accompanied by all of the following:

1. (a) A description of the district which comprises the proration zone upon which the proposed marketing program is to be based.
2. (b) A general statement of facts which sets forth the necessity for instituting a marketing program.
3. (c) A draft of a proposed marketing program, or a statement of the principal features which are to be included in the proposed marketing program.