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＃ FROM SC WHERE C＃='C2' AND GRADE >= ALL (SELECT GRADE FROM SC WHERE C＃ = 'C2')
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