3-4 Multiple Choice Questions

multiple choice

Use the method of loading more to paginate the data, each page displays 10 pieces of data, and now the page displays 20 pieces of data, click again to load more request codes. The correct one of the following options is () (select one )

A
$('#bid').click(function(){
    $.post('/ajax.php',{30},function(data){
    },'json');
});

B
$('#bid').click(function(){

   var num=10 ;
    $.post('/ajax.php',{number:num},function(data){
    },'json');
});

C
$('#bid').click(function(){
    var num=30;
    $.post('/ajax.php',{number:num},function(data){
    },'json');
});

D
$('#bid').click(function(){
    $.post('/ajax.php',{num=30},function(data){
    },'json');
});

C