已知选课关系SC(S# char(8), C# char(8), GRADE integer),S#,C#课程号,GRADE成绩。检索选修课程'C2'的学生中成绩最高的学生的。正确的SELECT语句是( )。
A.
SELECT S# FROM SC WHERE C#='C2' AND GRADE >=MAX(SELECT GRADE FROM SCWHERE C#='C2');
B.
SELECT S# FROM SC WHERE C#='C2' AND GRADE >= ALL(SELECT GRADE FROM SC WHERE C#='C2');
C.
SELECT S# FROM SC WHERE C#='C2' AND GRADE NOT IN(SELECT GRADE FROM SC WHERE C#='C2');
D.
SELECT S# FROM SC WHERE C#='C2' AND GRADE IN (SELECT GRADE FROM SCWHERE C#='C2');