My code won't run: `quiz.js:24 Uncaught TypeError: Cannot read property '0' of undefined at quiz.js:24`

for ( let i = 0; i < questions.length; i++ ) {
  let question = questions[i][0];
  let answer = questions[i][1];
  let response = prompt(question);

// 1. Create a multidimensional array to hold quiz questions and answers
const questions = [
  ['Are JavaScript and Java related?', 'No'],
  ['What type of programming is Sass?', 'Preprocessor'],
  ['What in JavaScript allows you to use code over and over again?', 'Functions']
  ['Where in the world is Carmen SanDiego?', 'Netflix']
];

// 2. Store the number of questions answered correctly
const correct = [];
const incorrect = [];

let correctAnswers = 0;

/* 
  3. Use a loop to cycle through each question
      - Present each question to the user
      - Compare the user's response to answer in the array
      - If the response matches the answer, the number of correctly
        answered questions increments by 1
*/

for ( let i = 0; i < questions.length; i++ ) {
  let question = questions[i][0];
  let answer = questions[i][1];
  let response = prompt(question);

    if ( response === answer ) {
      correctAnswers++;
      correct.push(question);
    } else { 
      incorrect.push(question);
    }
}

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


// 4. Display the number of correct answers to the user

let html = `
  <h1>You got ${correctAnswers} question(s) correct!
  <h2>You got these questions right:</h2>
  <ol>${createListItems(correct)}</ol>

  <h2>You got these questions wrong:</h2>
  <ol>${createListItems(incorrect)}</ol>
`;

document.querySelector('main').innerHTML = html;