Javascript Challenge Quiz

function ListItems(QuizList, List) {
  var ReturnList = "<ol>";
  for (var a = 0; a < List.length; a += 1) { ReturnList += "<li>" + QuizList[ List[a] ][0]+ "<br>" + QuizList[ List[a] ][1] + "</li>"; }
  ReturnList += "</ol>"
  return ReturnList;
}

function Quiz() {
  var Answer;
  var CorrectAnswers = [];
  var WrongAnswers = [];
  var QuizList = [
  ["Howmany provinces does Belgium count?", "10"],
  ["Howmany regionale gouverments does Belgium have? (without the Federale gouverment)", "6"],
  ["Howmany languages does the gouverment of Belgium apply?", "3"],
  ["What is both the capital of Belgium and of Europe?", "brussels"],
  ["Which city of Belgium is considered the 3rd biggest harbour port in Europe?", "antwerps"],
  ["Which medieval city is known for choclate?", "bruges"],
  ["For what other product is Belgium known for, except for choclate and (french) frites?", "beer"]];
  for (var a = 0; a < QuizList.length; a += 1) { 
    Answer = prompt(QuizList[a][0]);
    if (Answer.toLowerCase() === QuizList[a][1]) { CorrectAnswers.push(a); }
    else { WrongAnswers.push(a); }
  }
  var message = "<p>You have " + CorrectAnswers.length + " answers right out of " + QuizList.length + ".</p>";
  message += "<h2>Good answers:<h2>" + ListItems(QuizList, CorrectAnswers);
  message += "<h2>Wrong answers:<h2>" + ListItems(QuizList, WrongAnswers);
  print(message);
}

function print(message) {
  document.write(message);
}

Quiz();