With no explanation, chose the best option from "A", "B", "C" or "D". as “strong medicine” to be employed “sparingly and only as a last resort.” Id. at 613, 93 S.Ct. 2908. Thus, before the doctrine may be invoked, the overbreadth must be real and substantial, “judged in relation to the [law’s] plainly legitimate sweep.” Id. at 615, 93 S.Ct. 2908; see also New York v. Ferber, 458 U.S. 747, 767-73, 102 S.Ct. 3348, 73 L.Ed.2d 1113 (1982). A law is unconstitutional in every application if the law itself — as opposed to some number of its applications — contains a defect that renders it unconstitutional under the applicable substantive constitutional standard. See Munson, 467 U.S. at 967 n. 13, 104 S.Ct. 2839; see also Schultz v. Frisby, 807 F.2d 1339, 1349 (7th Cir.1986), rev’d on other grounds by 487 U.S. 474, 108 S.Ct. 2495, 101 L.Ed.2d 420 (1988) (<HOLDING>). In Munson, the Court noted that courts

A: recognizing that the possibility of a tradeoff between merits relief and attorneys fees is often implicit in class action settlement negotiations
B: recognizing difference between two forms of facial challenges and stating that they are often conflated
C: recognizing distinction between two types of waiver
D: recognizing difference between tolling and equitable estoppel
B.