One of the Difficulties in Implementing a Multidivisional Corporate Level

One of the difficulties in implementing a multidivisional corporate level structure is that _____.

A) it is often difficult to decide which activities will be performed at the corporate level and which ones will be held within the division
B) dual authority can cause frustration and confusion
C) it restricts the view of organizational goals
D) great effort is needed to maintain the power balance
E) the additional training required can be expensive