Why is strategy implementation referred to as the "graveyard of strategy"?

Multiple Choice

• The successful implementation of a strategy requires key functions in the organization to compete with each other.
• The levers that managers have at their disposal during the implementation stage of a strategy are insufficient.
• It is a process that is independent of strategy formulation and is not necessary to ensure continued success.
• Managers often fail to implement a chosen strategy successfully despite extensive analysis of business environments.