I'm just learning now. Can you please help me, why am I not getting the correct output. This is my code:

```
//ask questions
var quiz = [
  ["When is Bulgaria established?", 681],
  ["What year was it before 16 years?", 2000],
  ["When does WWII ends?", 1945]
];

//variables
var answer = [];
var correct = [];
var wrong = [];
var correctAns = 0;
var wrongAns = 0;
var oList = "<ol>";

//function to print the result in ordered list
function printResult(result){
  for(var j = 0; j < result.length; j++){
    oList += "<li>" + result[i] + "</li>";
  }
  oList += "</ol>";
  return oList;
}

function print(message) {
  document.getElementById('output').innerHTML = message;
}

//looping, adding correct and wrong answeres
for(var i = 0; i < 3; i++) {
  answer[i] = prompt(quiz[i][0]);
  if(parseInt(answer[i]) == quiz[i][1]){
    correct.push(quiz[i][0]);
    correctAns++;
  } else {
    wrong.push(quiz[i][0]);
    wrongAns++;
  }
}

//print logic
if(correct.length < 1 || correct == undefined){
  print("You did not guess any of the quiestions!");
} else if (correct.length >= 1){
  print("You have guessed " + correctAns + " questions.");
  print(printResult(correct));
  print("You have " + wrongAns + " wrong answeres.");
  if(wrongAns > 0){
    print(printResult(wrong));
  }
}

```

I have watched this code over and over again and I still can't understand why am I getting undefined as a result. In the debugger, after the loop I check my vars and everything seems ok.