设有Teachers表，该表的定义如下：CREATE TABLE Teachers(Tno CHAR(8) PRIMARY KEY,    Tname VARCHAR(10) NOT NULL,    Age TINYINT CHECK(Age BETWEEN 25 AND 65) )下列插入语句中，不能正确执行的是 （     ）

A、INSERT INTO Teachers VALUES('T100','张鸿',NULL)

B、INSERT INTO Teachers(Tno,Tname,Age) VALUES('T100','张鸿',30)

C、INSERT INTO Teachers(Tno,Tname) VALUES('T100','张鸿')

D、INSERT INTO TeachersVALUES('T100','张鸿')