With no explanation, chose the best option from "A", "B", "C" or "D". on the contention that there is no "actual case or controversy" between Carlson and the mov-ants. (Mem. in Supp. of Rule 12(b) Mot. to Dismiss by NAC, Scor, Sorema, and Munich at 4-7; Mem. of Law in Supp. of TIG's Mot. to Dismiss at 6-8 (and Reply in Supp. of TIG's Mot. to Dismiss at 5-7); Mem. in Supp. of Rule 12(b) Mot. to Dismiss by Swiss America and Swiss at 4-6; Mem. of Law in Supp. of General and Genesis’ Mot. for Summ. J. at 7-10.) The movants’ argument that there is no actual case or controversy amounts to the contention that there is a "lack of jurisdiction over the subject matter.” Fed.R.Civ.P. 12(b)(1); Aetna Life Ins. Co. v. Haworth, 300 U.S. 227, 239-41, 57 S.Ct. 461, 81 L.Ed. 617 (1937); Medtronic, Inc. v. Mine Safety Appliances Co., 468 F.Supp. 1132, 1134 (D.Minn.1979) (<HOLDING>). 6 . It is "widely recognized that [the]

A: holding that the exercise of judicial power under article iii of the united states constitution requires an actual case or controversy
B: holding that the requirement of an actual case or controversy is a jurisdictional prerequisite under the constitution
C: holding that a coa is a jurisdictional prerequisite
D: holding that the ninetyday filing requirement is not a jurisdictional prerequisite and is subject to equitable tolling
B.