With no explanation, chose the best option from "A", "B", "C" or "D". Americans with Disabilities Act may be waiveable, it is unnecessary for the court to make this determination because the collective bargaining agreement “does not contain a clear and unmistakable waiver of the covered employees’ rights ....” Id. at 82, 119 S.Ct. 391 (emphasis added). Of particular relevance to this case is the Court’s statement wherein it indicated that protection from ambiguous or unclear waivers is even more necessary when a “substantive right” is involved, as here. See id. at 80, 119 S.Ct. 391 (stating although the right to a judicial forum “is not a substantive right ... [it] is of sufficient importance to be protected against less-than-explicit union waiver in a CBA”) (citing Metro. Edison Co. v. NLRB, 460 U.S. 693, 709-10, 103 S.Ct. 1467, 75 L.Ed.2d 387 (1983)) (<HOLDING>) (emphasis added). Underlying both of these

A: holding that a district court may have jurisdiction over action taken by the national labor relations board despite an express statutory finality provision when the agency has acted in excess of its delegated powers and contrary to a specific prohibition in the national labor relations act
B: holding that two entities were a single employer and therefore that their gross receipts could be totaled together to establish jurisdiction under the national labor relations act
C: holding ports authority was not an employer subject to the jurisdiction of the national labor relations board
D: holding that although a union may waive a members substantive statutory right under the national labor relations act to be free from having a private employer discourage membership in any labor organization such waiver did not occur because such waiver must be established clearly and unmistakably
D.