In Warner v. Waste Management, Inc. (1988), 36 Ohio St.3d 91, 521 N.E.2d 1091, the Ohio Supreme Court set forth seven elements for a class to be certified. In determining whether a class action is properly certified, the first step is to ascertain whether the threshold requirements of Civ.R. 23(A) have been met. Once those requirements are established, the trial court must turn to Civ.R. 23(B) to discern whether the purported class comports with the factors specified therein. Five prerequisites are explicitly set forth in Civ.R. 23, while two prerequisites are implicit in the rule. Id. The four delineated prerequisites in Civ.R. 23(A) include the following: (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 and defenses of the class; (4) the representative parties will fairly and adequately protect the interests of the class. Id. at 97, quoting Civ.R. 23(A). The trial court then must find that one of the three Civ.R. 23(B) requirements is met before the class may be certified. Id. at 94. If the class movant fails to meet one of these requirements, class certification must be denied.