No conclusion _______ about whether to tear down the old buildings for a theme park until several discussions have been made．

A．will be reached　

B．is reached　

C．is being reached　

D．had been reached

建设项目竣工验收时，其职业病防护设施经（）验收合格后，方可投入正式生产和使用。

A.卫生行政部门 

B.安全管理部门 

C.公安部门