(a) The court, shall determine whether any prospective juror is disqualified for jury service on the basis of information provided on the juror qualification form or interview with the prospective juror or other competent evidence. The clerk shall enter this determination in the space provided on the juror qualification form and on the alphabetical lists of names drawn from the jury wheel or jury box.
(b) A prospective juror is disqualified to serve on a jury if the prospective juror:
(1) Is not a citizen of the United States, at least 18 years old and a resident of the county;