Which One of the Following Statements Regarding Staff Authority Is

Which one of the following statements regarding staff authority is true?

A) It enables those responsible for improving the effectiveness of line personnel to perform their required tasks.
B) It involves giving orders concerning production activities.
C) It pertains to matters directly involving management system production,sales,and finance and,as a result,the attainment of objectives.
D) It reflects existing superior-subordinate relationships.
E) It consists of the right to give orders within a segment of the organization in which this right is normally nonexistent.