With no explanation, chose the best option from "A", "B", "C" or "D". Le pleaded guilty to conspiracy to possess, with intent to distribute, 1,000 or more marijuana plants, in violation of 21 U.S.C. §§ 841(a)(1), 841(b)(1)(A)(vii), and 846, pursuant to a plea agreement containing an appeal waiver. The district court sentenced her, inter alia, to the mandatory minimum sentence of 10 years’ imprisonment. In seeking to circumvent the appeal waiver, Le asserts, inter alia, the mandatory minimum sentence violates the Eighth Amendment in the light of evolving standards of decency, and, therefore, the waiver does not bar her appeal. In response, the Government contends this court should, nevertheless, dismiss the appeal. A defendant may waive the statutory right to appeal in a valid plea agreement. See United States v. Story, 439 F.3d 226, 231 (5th Cir. 2006) (<HOLDING>). “This court reviews de novo whether an appeal

A: holding that waivers of  2255 collateral attack rights must be expressly stated to be enforceable
B: holding appellate waivers are enforceable if invoked by the government
C: recognizing an agreement to agree is enforceable if its terms are reasonably definite and certain
D: holding that the government was not bound by its waivers in three prior contracts
B.