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【单选题】
在数据库的如下两个表中，若学生成绩表的主键是学生号和课程名，学生表的主键是学生号。在下列所给的操作中，( )操作不能执行。A.
从学生成绩表中删除行('0001'，'001'，60)
B.
将行('0102'，'002'，80)插入到学生成绩表中
C.
将学生成绩表中学生号='0101'的学号改为60
D.
将学生成绩表中学生号='0103'的学号改为'0104'
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