Mac Cosmetics is a women's cosmetics and beauty retailer headquartered in New York, with stores located in many countries. Mac has developed a "quick response" system that allows store merchandise to be adjusted rapidly to fit changing customer preferences. Every aspect of Mac's operation is optimized for this system, making it difficult for competitors like NARS Cosmetics to duplicate. Mac has established: a related diversification opportunity O a sustainable competitive advantage. locational excellence. a diversification growth strategy. O customer loyalty