学生成绩表grade中有字段score(float),现在要把所有在55分至60之间的分数提高5分,以下sql语句正确的是( )。

A. Update grade set score=score+5
B. Update grade set score=score+5 where score>=55 or score <=60
C. Update grade set score=score+5 where score between 55 and 60
D. Update grade set score=score+5 where score >=55 and score <=60 正确答案： CD