Which SQL statement accepts user input for the columns to be displayed, the table name, and the WHERE condition?（）<br>A:SELECT &1, "&2" FROM &3 WHERE last_name = '&4';<br>B:SELECT &1, '&2' FROM &3 WHERE '&last_name = '&4'';<br>C:SELECT &1, &2 FROM &3 WHERE last_name = '&4';<br>D:SELECT &1, '&2' FROM EMP WHERE last_name = '&4';

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';

出自：Oracle认证

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