Which of the Following Are Fatal Flaws in Strategic Execution

Which of the following are fatal flaws in strategic execution?

A) Misunderstanding industry attractiveness,no real competitive advantage,compromising strategy for growth,pursuing and an unattainable competitive position and failure to explicitly communicate the venture strategy to employees
B) Misunderstanding competitive advantage,lack of industry knowledge,pursuing lower level goals and failure to work hard on the business
C) Misunderstanding competitors,illogical operations planning and poorly trained staff
D) Misunderstanding customers wants and needs,not completing a SWOT analysis and not communicating with customers