设有学生表 student(sno,sname,sage,smajor) ,各字段的含义分别是学生学号、姓名、年龄和专业。要 求输入一学生记录,学号为 100,姓名为张红,年龄为 20。以下不能完成如上输入要求的语句是 ______
A. INSERT INTO student VALUES(100," 张红 ",20) ;
B. INSERT INTO student(sno,sname,sage,smajor) VALUES(100," 张红 ",20,NULL) ;
C. INSERT INTO student VALUES(100," 张红 ",20,NULL) ;
D. INSERTINTO student(sno,sname,sage) VALUES(100," 张红 ",20) ;