With no explanation, chose the best option from "A", "B", "C" or "D". in Jackson, Georgia, their state habeas petitions are filed in Butts County. 16 . See Turpin, 498 S.E.2d 52; Head v. Ferrell, 274 Ga. 399, 554 S.E.2d 155, 166-67 (2001) (finding no error in state habeas court’s consideration of mental retardation claim under miscarriage of justice exception to procedural default under Turpin); Schofield v. Holsey, 281 Ga. 809, 642 S.E.2d 56, 63 (2007) (finding that petitioner had not established mental retardation, but noting that "the habeas court was correct in considering this new claim, because this Court, under the ‘miscarriage of justice’ exception to the rule of procedural default, has authorized habeas courts to consider alleged mental retardation when the issue was not raised at trial”); Hall v. Lewis, 286 Ga. 767, 692 S.E.2d 580, 593 (2010) (<HOLDING>); see also Rogers v. State, 276 Ga. 67, 575

A: holding unappealed finding by habeas court that petitioner was mentally retarded under miscarriage of justice exception to procedural default rendered moot new sentencing trial based upon ineffective assistance of counsel
B: holding that ineffective assistance of counsel constitutes cause for procedural default only if counsels performance was constitutionally ineffective
C: holding that petitioner did not procedurally default his ineffective assistance of counsel claim by failing to raise it on direct appeal
D: holding that an issue of ineffective assistance of counsel is rendered moot when a defendant receives an illegal sentence
A.