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单项选择题 Examine the structure if the EMPLOYEES table: You need to create a view called EMP_VU that allows the user to insert rows through the view. Which SQL statement, when used to create the EMP_VU view, allows the user to insert rows?（）

A、CREATE VIEW emp_Vu AS   SELECT employee_id, emp_name,   department_id   FROM employees   WHERE mgr_id IN (102, 120);

B、CREATE VIEW emp_Vu AS   SELECT employee_id, emp_name, job_id   department_id   FROM employees   WHERE mgr_id IN (102, 120);

C、CREATE VIEW emp_Vu AS   SELECT department_id, SUM(sal) TOTALSAL   FROM employees   WHERE mgr_id IN (102, 120)   GROUP BY department_id;

D、CREATE VIEW emp_Vu AS   SELECT employee_id, emp_name, job_id,   DISTINCT department_id   FROM employees;

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