根据关系模型Students(学号,姓名,性别,专业)下列SQL语句中有错误的是______。

A：SELECT_COUNT(*) FROM_Students GROUP_BY 性别

B：SELECT_COUNT(*) FROM Students GROUP_BY 性别 WHERE 专业 = "计算机"

C：SELECT_COUNT(*) FROM Students GROUP_BY 性别 HAVING 专业 = "计算机"

D：SELECT_COUNT(*) AS 人数 FROM Students GROUP_BY 性别