在SQL Server中，从名为Persons的表中查询所有列，并按FirstName的字母顺序反向排序，的正确SQL语法是什么？( )
SELECT * FROM Persons WHERE FirstName ORDER BY FirstName DESC
SELECT * FROM Persons SORT REVERSE 'FirstName'
SELECT * FROM Persons ORDER BY -'FirstName'
SELECT * FROM Persons ORDER BY FirstName DESC
