Use Tuple to send Excel Column headers and data row from same function using C#

public Tuple<DataTable,List<string>> ReadXcel(string fileName, string sheetName, string tblName)
        {
            var connectionString = "Provider=Microsoft.ACE.OLEDB.12.0;Data Source=" + fileName + ";Extended Properties=Excel 12.0;";
            var adapter = new OleDbDataAdapter("SELECT * FROM [" + sheetName + "]", connectionString);
            var ds = new DataSet();
            adapter.Fill(ds, tblName);

            var dt = ds.Tables[tblName];

            var excelColumnHeaders= dt.Columns.Cast<DataColumn>()
                                 .Select(x => x.ColumnName)
                                 .ToList();
           
            return Tuple.Create(dt, excelColumnHeaders);
        }