Can anyone provide feedback on my code?

var questionsAndAnswers =[
  ["What is the capital of England?" , "london"],
  ["What is the finnish word for cheese?" , "juusto"],
  ["What is 2+3?" , "5"]
];


var correct = 0;
var incorrect = 0;

var correctArray = []; //This array stores the questions answered correctly
var incorrectArray = []; //This array stores the questions answered incorrectly

var totalQuestions = questionsAndAnswers.length; //This variable stores the total number of questions within the 2D array


for (var i=0; i<questionsAndAnswers.length; i+=1) {

  var answer = prompt(questionsAndAnswers[i][0]);

  if(answer.toLowerCase() === questionsAndAnswers[i][1]) {

    correct +=1;
    correctArray.push(questionsAndAnswers[i][0]);

  } else {
    incorrect +=1;
    incorrectArray.push(questionsAndAnswers[i][0]);
         }

}


function printArray (arrayName) {

  for (var i=0 ; i<arrayName.length ; i+=1) {
    var brackets = i+1;
    document.write("<p>" + "  " + brackets + ") " + arrayName[i] + "</p>");
  }
}


document.write("<p>You got " + correct + " out of " + totalQuestions + " questions correct!</p>");

document.write("<p>The questions you got correct were: </p>");

printArray(correctArray);

document.write("<p>The questions you got incorrect were: </p>");
printArray(incorrectArray);