(a) Program documents executed by producers legally authorized to represent estates or trusts will be accepted only if such producers furnish evidence of the authority to execute such documents.

(b) A minor who is otherwise eligible for assistance under this part must also:

(1) Establish that the right of majority has been conferred on the minor by court proceedings or by statute;

(2) Show that a guardian has been appointed to manage the minor's property and the applicable program documents are executed by the guardian; or

(3) Furnish a bond under which the surety guarantees any loss incurred for which the minor would be liable had the minor been an adult.