With no explanation, chose the best option from "A", "B", "C" or "D". and any incentives he was offered or received for his cooperation with HPD constitutes a Brady violation. See Brady, 373 U.S. at 87, 83 S.Ct. at 1196-97 (requiring that State turn over material, favorable evidence to defendant). We review the trial court’s ruling on a confidential-informant motion for abuse of discretion. Sanchez v. State, 98 S.W.3d 349, 356 (Tex.App.-Houston [1st Dist.] 2003, pet. ref'd). We will disregard any error, however, unless it affected the defendant’s substantial rights. Tex.R.App. P. 44.2(b); Sanchez, 98 S.W.3d at 356-57 (stating trial court’s failure to order disclosure of confidential informant’s identify is non-constitutional error governed by Tex. R.App. P. 44.2(b)); see also Heard v. State, 995 S.W.2d 317, 321 (Tex.App.-Corpus Christi 1999, pet. ref'd) (<HOLDING>). A substantial right is affected when the

A: holding a waiver of a substantial constitutional right must be a voluntary knowing and intelligent act
B: holding trial courts failure to disclose confidential informants identity must be analyzed under substantial right test
C: holding that the failure to object to a trial courts instruction constitutes waiver
D: holding that a defendants right to an independent blood alcohol test means the right to a test that is not subject to government manipulation
B.