Which One of the Following Is Not an Advantage of Decentralization

Which one of the following is not an advantage of decentralization for an organization?

A) Enhanced goal congruence, because the subunits managers are more focused to improve the performance of the company as a whole.
B) Faster response to changing circumstances, because decisions are not made by higher-level managers who need to be advised of all the facts
C) Increased motivation of managers, because they are responsible for their own decisions and the results of their respective divisions
D) Better training for future executives, because lower level managers get involved in more diverse business decisions