有这样三个表：学生表S、课程表C和学生选课表SC，它们的结构如下：S(S#，SN，SEX，AGE，DEPT)、C(C#，CN)、SC(S#，C#，GRADE)。其中：S#为学号，SN为姓名，SEX为性别，AGE为年龄，DEPT为系别，C#为课程号，CN为课程名，GRADE为成绩。要求如下：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
B. FROM SC WHERE C
C. ="C2" AND GRADE >= ( SELECT GRADE FROM SC WHERE C
D. ="C2" )
E. SELECT S
FROM SC WHERE C
G. ="C2" AND GRADE >= ( SELECT GRADE FROM SC WHERE C
H. ="C2" )
I. SELECT S
J. FROM SC WHERE C
K. ="C2" AND GRADE NOT IN ( SELECT GRADE FROM SC WHERE C
L. ="C2" )
M. SELECT S
N. FROM SC WHERE C
O. ="C2" AND GRADE = ( SELECT MAX(GRADE) FROM SC WHERE C
P. ="C2" )