检索选修课程"C2”的学生中成绩最高的学生的学号,正确的SELECT语句是______。A.SELECT S# FORM. SC
检索选修课程"C2”的学生中成绩最高的学生的学号,正确的SELECT语句是______。
A.SELECT S# FORM. SC WHERE C#="C2"AND GRADE>=(SELECT GRADE FORM. SC WHERE C#="C2")
B.SELECT S# FORM. SC WHERE C#="C2"AND GRADE IN(SELECT GRADE FORM. SC) WHERE C#="C2"
C.SELECT S# FORM. SC WHERE C#="C2"AND GRADE NOT IN(SELECT GRADE FORM. SC WHERE C#="C2")
D.SELECT S# FORM. SC WHERE C#="C2"AND GRADE>=ALL(SELECT GRADE FORM. SC WHERE C#="C2")