A. SELECT 姓名,COUNT(*)AS外币种类 FROM 持有数;GROUP BY 姓名 HAVING COUNT(*)>=4;ORDER BY 外币种类,姓名 DESC B. SELECT 姓名,COUNT(*)AS 外币种类 FROM 持有数;GROUP BY 姓名 HAVING COUNT(*)>=4;ORDER BY COUNT(*),姓名 DESC C. SELECT 姓名,COUNT(*)AS 外币种类 FROM 持有数;GROUP BY 姓名 HAVING COUNT(*)>=4;ORDER BY 外币种类 AND 姓名 DESC D. SELECT 姓名,COUNT(*)AS 外币种类 FROM 持有数;GROUP BY 姓名 HAVING COUNT(*)>=4;ORDER BY 外币种类+姓名 DESC