Which SQL statement accepts user input for the columns to be displayed, the table name, and the WHERE condition?（）

• A、SELECT &1, "&2" FROM &3 WHERE last_name = '&4';
• B、SELECT &1, '&2' FROM &3 WHERE '&last_name = '&4'';
• C、SELECT &1, &2 FROM &3 WHERE last_name = '&4';
• D、SELECT &1, '&2' FROM EMP WHERE last_name = '&4';