Javascripttel irt kviz bizonyos resze miert nem mukodik?

Egy tutorialt csinaltam vegig lepesrol lepesre. A felugro ablakban mutatna, hogy a kerdeskbol mennyit talalt el az illeto. A loop resze mukodik viszont a kerdesekre egyenkent megirt sorok altal mindig az jon ki, hogy tokeletes minden meg akkor is ha direkt rosszat jeloltem be.

html:

<section>

<div id="results">

</div>

<form class="" name="quizForm" onsubmit="return submitAnswers()">

<h3>1+1</h3>

<input type="radio" name="q1" value="a" id="q1a">a 1<br>

<input type="radio" name="q1" value="b" id="q1b">b 2 <br>

<input type="radio" name="q1" value="c" id="q1c">c 3 <br>

<input type="radio" name="q1" value="d" id="q1d">d 4 <br>

<h3>1-1</h3>

<input type="radio" name="q2" value="a" id="q2a">a 3<br>

<input type="radio" name="q2" value="b" id="q2b">b 2<br>

<input type="radio" name="q2" value="c" id="q2c">c 1<br>

<input type="radio" name="q2" value="d" id="q2d">d 0<br>

<br><br>

<input type="submit" name="" value="Submit Answers">

</form>

</section>

js

function submitAnswers(){

var total = 2;

var score = 0;

// Get User Input

var q1 = document.forms["quizForm"]["q1"].value;

var q2 = document.forms["quizForm"]["q2"].value;

//Set correct Answers

var answers = ["b","d"];

//Check Answers

if(q1 == answers[0]);{

score++;

}

if(q2 == answers[1]);{

score++;

}

}

A mukodo loop meg ez:

for(i = 1; i <= total;i++){

if(eval('q'+i) == answers[i - 1]){

score++;

}