Quiz Challenge, Part 2 - JavaScript Loops, Arrays and Objects I having It Wrong In the List!!

<h2>Javascript Quiz</h2>
<script>


var correct=[];
var wrong=[];
var html;


function list(array){
    var listhtml='<ol>';
    for(i=0;i<array.length;i++)
        {
            listhtml+='<li>'+array[i]+'</li>';
        }
    listhtml+='</ol>'
    return listhtml;
}





var qanda=[['States','29'],
         ['tamilnadu','chennai'],
         ['india','delhi']
        ];


for(i=0;i<qanda.length;i++)
{    
var response =prompt(qanda[i][0]);

if(response===qanda[i][1])
    {
       correct+=qanda[i][0];

    }
    else
        {

            wrong+=qanda[i][0];

        }

}
document.write('<h3>Thse are correctly answered</h3>')

document.write('<p>'+list(correct)+'</p>')
document.write('<h3>Thse are wrongly answered</h3>')
document.write('<p>'+list(wrong)+'</p>')   
</script>
</body>
</html>