对Student(Sno,Sname)和SC(Sno,Cno,Grade)表,查询考试成绩大于75分的学生的学号和姓名,正确的语句是( )。 A. SELECT Sno, Sname FROM SC WHERE Grade>75 B. SELECT Sno, Sname FROM Student WHERE Grade>75 C. SELECT Sno, Sname FROM Student WHERE Sno IN( SELECT Sno FROM SC WHERE Grade>75 ) D. SELECT Sno, Sname FROM StudentWHERE Sno FROM SC AND Grade>75