对于教学数据库的三个基本表：S(Sno，Sname，Ssex)，SC(Sno，Cno，Grade)，C(Cno，Cname，Teacher)，其中S表为学生表，SC为学生选课表，C为课程表，则对于语句：检索至少选修LIU老师所授课程中一门课程的女生姓名，SQL语句错误的是______。

A．SELECT SnameFROM S，SC，CWHERE S Sno=SC.Snn AND SC.Con=C.Con And Teacher="LTU" AND Seex="F"
B．SELECT SnameFROM S WHERE Ssex="F" AND Sno IN(SELECT SnoFROM SCWHERE(Cno IN(SELECT Cno FROM CWHERE Teacher="LIU"))
C．SELECT SnameFROM S WHERE Ssex="F" AND EXISTS(SELECT*FROM SCWHEPE SC.Sno=S. Sno AND EXISTS(SELECT*FROM CWHERE Teacher="LIU"))
D．SELECT SnameFROM S WHEPE Ssex="F" AND EXISTS(SELECT*FROM SCWHERE SC.Sno=S.Sno AND EXISTS(SELECT*FROM CWHERE C Cno=SC Cno AND Teacher="LIU"))