Quiz attempt- answers are always wrong?

//ask questions -- use a two-dimensional array to store questions and answers
//display # of correct answers at end of quiz ---keep track of # of correct answers 
//use a conditional statement to scompare the response from the player to the answer in the array
//cycle through the questions using a for loop.

var questions = [
["What villian was formerly Captian America's sidekick Bucky?", "winter soldier"],
["In the DC universe, Which hero resembles Robin Hood?", "green arrow"],
["Which superhero beat superman in a foot race?", "flash"]
]

var correct= 0;
var incorrect= 0;

for (var i = 0; i < questions.length; i+= 1) {
  var answer= prompt(questions [i][0]);  
  if(answer.toLowerCase === questions [i][1]) {
    correct += 1;
  } else {
    incorrect += 1;
  }
}  

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

print("You got " + correct + " out of " + questions.length + " right!");
print("You got " + incorrect + " out of " + questions.length + " wrong.");