Correct/wrong questions are not printing correctly

let questions = [
  ["What programming language is this?", "javascript"],
  ["Which state is the closest to a square?", "colorado"],
  ["Who is teaching this lesson?", "dave mcfarland"]
];
let correctAnswers = 0;
let question;
let answer;
let response;
let html;
let correct = [];
let wrong = [];

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

function buildList(arr) {
  let listHTML = '<ol>';
  for (var i = 0; i < arr.length; i++) {
    listHTML = `<li>${arr[i]}</li>`;
  }
  listHTML += '</ol>';
  return listHTML;
}

for (let i = 0; i < questions.length; i++) {
  question = questions[i][0];
  answer = questions[i][1];
  response = prompt(question);
  response = response.toLowerCase();
  if (response === answer) {
    correctAnswers++;
    correct.push(question);
  } else {
    wrong.push(question);
  }
}

html = `You got ${correctAnswers} question(s) correct.`;
html += '<h2>You got these questions correct:</h2>';
html += buildList(correct);
html += '<h2>You got these questions wrong:</h2>';
html += buildList(wrong);
print(html);