Linq C# If else statement

public DataTable GetQuotationInfo(int QuotationId)
    {

        FADB db = new FADB();

        DataTable dt = new DataTable();
        dt.Columns.Add("QuotationId");
        dt.Columns.Add("ServiceOrderNo");
        dt.Columns.Add("Date");
        dt.Columns.Add("Name");
        dt.Columns.Add("OnwerAddress");
        dt.Columns.Add("QuotationNo");
        dt.Columns.Add("Premises");
        dt.Columns.Add("PayableTo");
        dt.Columns.Add("Status");

        dt = (from q in db.Csm_quotations
              join j in db.Csm_quotation_jobs on q.QuotationId equals j.QuotationId
              join c in db.Csm_complaints on q.ComplaintId equals c.ComplaintID
              join f in db.Fa_lots on c.UnitId equals f.UnitId
              join o in db.Sys_owners on f.OwnerId equals o.OwnerId

              group new { q,j,c,f,o } by new { q.QuotationId,c.ComplaintCode,q.QuotationDate,q.QuotationSubject,q.PayableTo,q.Status,f.OwnerAddress,f.Address,o.OwnerName }
              into grp
              where grp.Key.QuotationId == Convert.ToUInt16(QuotationId)
             select new
              {

            QuotationId = grp.Key.QuotationId,
            ServiceOrderNo = grp.Key.ComplaintCode,
            Date = grp.Key.QuotationDate.ToString("dd/MM/yyyy"),
            Name = grp.Key.OwnerName,
            OnwerAddress =grp.Key.OwnerAddress,
            QuotationNo = grp.Key.QuotationSubject,
            Premises = grp.Key.Address,
            PayableTo = grp.Key.PayableTo,
            Status =  select new { grp.Key.Status = 'A' ? "Approved" : grp.Key.Status = 'R' ? "Rejected"}; /// having problem on this issue


              }).ToDataTable();
        return dt;