设有学生表S(学号，姓名，性别，年龄)，查询所有年龄小于等于18岁的女同学、并按年龄进行降序排序生成新的表WS，正确的SQL命令是( )。

A．SELECT* FROM S
WHERE 性别='女' AND 年龄＜=18 ORDER BY 4 DESC INTO TABLE WS
B．SELECT* FROM S
WHERE 性别='女' AND 年龄＜=18 ORDER BY 年龄 INTO TABLE WS
C．SELECT* FROM S
WHERE 性别='女' AND 年龄＜=18 ORDER BY '年龄' DESC INTO TABLE WS
D．SELECT* FROM S
WHERE 性别='女' OR 年龄＜=18 ORDER BY '年龄' ASC INTO TABLE WS