What is a strategic group, and how can understanding strategic groups be useful for industry analysis?

Question $47$ options:

a$)$

A group of companies that follow different strategies, which can help identify customers and potential opportunities within an industry.

b$)$

A group of companies that follow similar strategies, which can help identify customers and potential opportunities within an industry.

c$)$

A group of companies that follow different strategies, which can help identify suppliers and potential threats within an industry.

d$)$

A group of companies that follow similar strategies, which can help identify competitors and potential threats within an industry.

e$)$

A group of companies that follow identical strategies, which can help identify suppliers and potential opportunities within an industry.