8. 若用如下的SQL语句创建一个student表:CREATE TABLE student(NO C(4) NOT NULL,NAME C(8) NOT NULL,SEX C(2),AGE N(2)) 可以插入到student表中的是()。
A. ("0251","王五",男,"25")
B. ("0251","王五",NULL,NULL)
C. (NULL,"王五","男",25)
D. ("0251",NULL,"男",25)
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