[单选题]
要从学生成绩表(stu_ grade)中查询出学号(stu_ no)等于109的学生姓名(name)和成绩(grade)，(13)可以实现这一功能。
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A．select *from stu_ grade
B．select* from stu_ grade where stu_ no='109'
C．select name, grade from stu_ grade
D．select name，grade from stu_ grade where stu_ no='109'
A．select *from stu_ grade
B．select* from stu_ grade where stu_ no='109'
C．select name, grade from stu_ grade
D．select name，grade from stu_ grade where stu_ no='109'