A company's strategy is at full power.

A$.$ only when all functional departments are using the same functional strategy, and all operating units are employing the same operating strategy.

B$.$ once company personnel become convinced that the overall strategy is a good one and that they have the ability to execute it well.

C$.$ when all managers with strategy$-$making responsibilities are delegated the authority to employ whatever strategy for their respective area they believe will work best.

D$.$ only after the CEO and senior executive review the strategy piece by piece and make needed adjustments in those strategy pieces deemed to be weak or inefficient.

E$.$ only when its many pieces are cohesive and mutually reinforcing, fitting together like a jigsaw puzzle.