In Criminal Cases in Which the Defendant Has Chosen a Trial

In criminal cases in which the defendant has chosen a trial by jury, the function of the judge involves all of the following except:

A) controlling excessive cross-examination by counsel.
B) determining the admissibility of evidence claimed to have been obtained illegally.
C) after hearing the jury verdict, makes the decision concerning whether to allow the defendant to appeal.
D) deciding whether to allow a mentally defective witness to testify.