ব্যাখ্যা
Texts summarize three broad pricing approaches: value-based (starting from buyer value), cost-based (starting from costs), and competition-based (considering rivals). These are the foundations under which specific strategies (e.g., product mix, adjustments) are chosen.
A matches the canonical trio; B are tactics under other headings (new-product or mix); C are price-adjustment tactics; D confuses 3Ps with pricing.
Reference: Principles of Marketing, Philip Kotler, Ch-9