Which of the following best describes the purpose of Michael Porter's Five Forces model?

To examine the macro environment to identify any triggers for change.

To examine the internal environment to identify the strengths and weaknessness of the business which can be used to gain competitive advantage.

To indentify the profit potential from the industry to determine whether to enter or remain in the industry.

To analyse the stakeholders of the business and their power and interest in order to manage them effectively.