With no explanation, chose the best option from "A", "B", "C" or "D". (1991) (internal quotation marks and citation omitted). “Indian tribes have long been recognized as possessing the common-law immunity from suit traditionally enjoyed by sovereign powers.” Santa Clara Pueblo v. Martinez, 436 U.S. 49, 58, 98 S.Ct. 1670, 56 L.Ed.2d 106 (1978). A tribe can waive its own immunity by expressing such a waiver. Kiowa Tribe of Okla. v. Mfg. Techs., Inc., 523 U.S. 751, 754, 118 S.Ct. 1700, 140 L.Ed.2d 981 (1998). Without an unequivocal and express waiver of sovereign immunity or congressional authorization, tribal entities are immune from suit. Id. at 757, 118 S.Ct. 1700. {6} Other entities under tribal control are extended the same sovereign immunity as the tribe itself. Parker Drilling Co. v. Metlakatla Indian Cmty., 451 F.Supp. 1127, 1131 (D.Alaska 1978) (<HOLDING>). Defendant in this ease is an entity that

A: holding that tribes wholly owned commercial business enjoyed sovereign immunity
B: holding that blackfeet tribes sovereign immunity extends to blackfeet housing authority
C: holding that the sovereign immunity afforded to tribes extends to their governmental organizations and business entities
D: holding that the legislature has in clear and unambiguous language waived sovereign immunity against elected public officials and governmental entities defined by the act to be employers
C.