Which of the Following Is True with Regard to Use

Which of the following is true with regard to use of staff positions?

A) Organizations can lower costs and increase efficiency by employing fewer staff personnel.
B) When organizations have smaller staff units, they tend to incur high expenditures.
C) Line personnel provide expert advice and guidance to people in staff positions.
D) Organizations can create a central core of full time staff personnel to improve efficiency.
E) Organizations should focus on employing more staff personnel to increase efficiency.