线路设计的步骤先后顺序是The sequence of the steps in route design is()
A.实地调查-修改方案-实地调查field investigation-revision plan-field investigation B.室内设计-访谈修正-实地调查predesign-interview correction-field investigation C.访谈设计-实地调查-修正方案interview design-field investigation-revision plan D.电脑设计-实地调查-资料整理computer design-field investigation-data collation