a defendant was convicted of fraud after a jury trial in state court. the conviction was affirmed on direct appeal. the defendant timely moved for post-conviction relief under the sixth amendment on the ground that his attorney had provided ineffective assistance of counsel. the trial judge, after a hearing, found that the attorney had performed deficiently by failing to raise a proper objection that would have resulted in exclusion of important prosecution evidence. what more, if anything, must the trial court find in order to sustain the defendant's sixth amendment claim?