Which of the following statements is not generally true of a diversification strategy based on the realization of economies of scope?

A、The strategy requires the head office to evaluate each business unit as a stand-alone operation.;
B、The strategy allows a company to realize cost economies among business units.;
C、The strategy may allow a company to use shared resources more intensively, thereby realizing economies of scale.;
D、The strategy requires managers to be aware of the costs of coordination.;
E、The strategy requires close coordination among different business units.