With no explanation, chose the best option from "A", "B", "C" or "D". As previously explained, the constitutional right to appeal is waivable, and a defendant who knowingly, intelligently, and voluntarily pleads guilty, waives the right to appeal his conviction and sentence. Because Defendant does not challenge the validity of his guilty plea, we conclude that Defendant waived his right to challenge the constitutionality of his sentence on appeal. Accordingly, there is no fundamental error necessitating reversal of Defendant’s conviction and sentence. We therefore do not reach the merits of Defendant’s cruel and unusual punishment claim. {17} We note that a defendant can enter a conditional plea of guilty and reserve the right to challenge the constitutionality of his sentence on appeal. See Rule 5-304(A)(2) NMRA; Hodge, 118 N.M. at 416, 882 P.2d at 7 (<HOLDING>). Alternatively, following the imposition of

A: holding conditional plea valid when court and prosecutor accept agreedupon condition
B: holding that appellants waived all issues not expressly reserved for appeal in their conditional guilty pleas
C: holding guilty pleas are not constitutionally forbidden and are valid if made voluntarily and intelligently
D: holding that conditional guilty pleas are valid when entered into in accordance with certain standards
D.