You find this query being used in your Oracle 12c database: Which method a used by the optimizer to limit the rows being returned?（）

• A、A filter is added to the table query dynamically using ROWNUM to limit the rows to 20 percent of the total rows
• B、All the rows are returned to the client or middle tier but only the first 20 percent are returned to the screen or the application.
• C、A view is created during execution and a filter on the view limits the rows to 20 percent of the total rows.
• D、A TOP-N query is created to limit the rows to 20 percent of the total rows