What sets focused (or market niche) strategies apart from low-cost leadership and bead differentiation strategies is A. the extra attention paid to top-note product performance and product quality. B. their concentrated attention on serving the needs of buyers in a narrow piece of the overall market. C. greater opportunity for competitive advantage. D. their suitability for market situations where most industry rivals have weakly differentiated products, E. their objective of delivering more value for the money.