查询学生姓名及其所选修课程的课程号和成绩,正确的SQL语句是
A. SELECT S.SNAME,SC.C#,GRADE FROM S WHERE S.S#=SC.S#
B. SELECT S.SNAME,SC.C#,GRADE FROM SC WHERE S.S#=SC.S#
C. SELECT S.SNAME,SC.C#,GRADE FROM S,SC WHERE S.S#=SC.S#
D. SELECT S.SNAME,SC.C#,GRADE FROM S,SC WHERE S.S#=SC.C#
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