With no explanation, chose the best option from "A", "B", "C" or "D". Scott Richard Feiden appeals the 200-month sentence imposed after his guilty plea to conspiracy to distribute methamphetamine, in violation of 21 U.S.C. § 846. We have jurisdiction pursuant to 28 U.S.C. § 1291. We dismiss in light of the valid appeal waiver. See United States v. Nguyen, 235 F.3d 1179, 1182 (9th Cir.2000) (stating that an appeal waiver is valid when it is entered into knowingly and voluntarily); see also United States v. Cardenas, 405 F.3d 1046, 1048 (9th Cir.2005) (<HOLDING>). DISMISSED. ** This disposition is not

A: holding that waiver of right to appeal sentence in plea agreement accepted before decision in united states v booker 543 us 220 125 sct 738 160 led2d 621 2005 was not invalidated by change in law
B: holding that united states v booker 543 us 220 125 sct 738 160 led2d 621 2005 did not alter the standard of review for the interpretation and application of the guidelines
C: holding that the changes in sentencing law imposed by united states v booker  us  125 sct 738 160 led2d 621 2005 did not render waiver of appeal involuntary and unknowing
D: holding that blakely and united states v booker 543 us 220 125 sct 738 160 led2d 621 2005 are not retroactive on collateral review
C.