Rule 23.01. Prerequisites to a Class Action

One or more members of a class may sue or be sued as representative parties on behalf of all only if:

(1) the class is so numerous that joinder of all members is impracticable;

(2) there are questions of law or fact common to the class;

(3) the claims or defenses of the representative parties are typical of the claims or defenses of the class; and

(4) the representative parties will fairly and adequately protect the interest of the class.