REST api postCatgory showing as object

items?$select=Created,Title,NumCommentsId,ID,PostCategory/Title&$expand=PostCategory"

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	$(document).ready(function(){
		$('#blog').DataTable();

		getListItems('http://mysite/blog','Posts','complete', 'failure','timeout');
	});

//Change code to use this - http://datatables.net/examples/advanced_init/events_live.html
function getListItems(url, listname, complete, failure, timeout) {

    // Executing our items via an ajax request
	
    $.ajax({
        url: url + "/_api/web/lists/getbytitle('" + listname + "')/items?$select=Created,Title,NumCommentsId,ID,PostCategory/Title&$expand=PostCategory",
        method: "GET",                                                      
        headers: { "Accept": "application/json; odata=verbose" },
		timeout: 2000,
		dataType:"json",
        success: function (data) {
            complete(data); // Returns JSON collection of the results
        },
        error: function (xhr,status,error) {
            console.log(status);
        }
    });

	function complete(data) 
	{		
		var bldRow=$('#Iblog').DataTable({
			"order": [[ 0, "desc" ]],
			"pagingType": "full_numbers"
		});
				
		var imgCategory=" ";
		for(var i =0; i < data.d.results.length; i++) 
		{		
			var imgStatus = (dateDiff(data.d.results[i].Created));
			if(imgStatus == "New")
			{
				imgCategory = "<img src='http://mysite.com/blog/Images1/yellowNew.png' alt='New'>";
			}		   
			bldRow.row.add([ dateFormat(data.d.results[i].Created), "<a href='http://mysite.com/blog/Lists/Posts/Post.aspx?ID="+data.d.results[i].ID+"'>"+data.d.results[i].Title+"</a>",data.d.results[i].NumCommentsId,/*data.d.results[i].Category,data.d.results[i].NumCommentsId,*/imgCategory]).draw();				   
		}
	 }
	function failure(data) {
	 alert("Operation failed.");
	 }	 
}	

	function dateDiff(spCreated)
	{
		var createdDte = new Date(spCreated);
		var todayDate = new Date();
		var timeDiff = Math.abs(todayDate.getTime() - createdDte.getTime());
		var days = Math.ceil(timeDiff/(1000*3600*24));
		var status = (days > 30) ? "Old":"New";
			
		return status;
	}

	function dateFormat(spCreated)
	{
		var createdDte = new Date(spCreated);
		var newFormat = (createdDte.getMonth()+1)+"/"+(createdDte.getDate()+"/"+createdDte.getFullYear());
		
		return newFormat;
	}
	
	 function openModal(blogID) {
		var pageUrl = 'http://mysite.com/blog/Lists/Posts/Post.aspx?ID='+blogID;
		var options = { url: pageUrl, width: 650, height: 650 };

		SP.SOD.execute('sp.ui.dialog.js', 'SP.UI.ModalDialog.showModalDialog', options);

	 }

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