查询订购单号（字符型，长度为4)尾字符是“1”的错误命令是（)。 A．SELECT * FROM 订单 WHERE SUBSTR（订购单号

A.A.SELECT * FROM 订单 WHERE SUBSTR(订购单号,4)="1"

B.B.SELECT * FROM 订单 WHERE SUBSTR(订购单号,4,1)="1"

C.C.SELECT * FROM 订单 WHERE "1"＄订购单号

D.D.SELECT * FROM 订单 WHERE RIGHT(订购单号,1)="1"