With no explanation, chose the best option from "A", "B", "C" or "D". Arbitrator manifestly disregarded the law in reaching h'er final decision. See Pl. Mot. at 20 n.16. She does so only in a footnote, however, and never affirmatively argues that “manifest disregard” is still a proper ground for vacatur in light of recent Supreme Court decisions. Id.; see also ARMA, S.R.O. v. BAE Sys. Overseas, Inc., 961 F.Supp.2d 245, 268 (D.D.C. 2013) (discussing Supreme Court’s equivocation in Hall Street Associates, 552 U.S. at 585, 128 S.Ct. 1396, on whether manifest disregard of law can be basis for vacatur of arbitral award). The Court thus considers the issue forfeited. Huntington v. Dep’t of Commerce, 234 F.Supp.3d 94, 101, 2017 WL 211301, at *4 (D.D.C. Jan. 18, 2017); Gold Reserve Inc. v. Bolivarian Republic of Venezuela, 146 F.Supp.3d 112, 126-27 (D.D.C. 2015) (<HOLDING>); see Hutchins v. District of Columbia, 188

A: holding that the waiver in two previous contracts was insufficient to support waiver of the contract at issue in that appeal
B: holding that failure to raise issue at district court forecloses party from raising same issue on appeal
C: holding that the validity of a collateral waiver is a threshold issue
D: holding obliquely raising issue in footnote insufficient to surmount waiver threshold
D.