(A) Production Concept - (III) Quantity of Product: The production concept emphasizes that consumers prefer products that are widely available and affordable. This concept is more concerned with maximizing the quantity of the product to meet demand.

(B) Product Concept - (IV) Quality/Features of Products: The product concept focuses on the quality and features of the product itself. It operates on the assumption that consumers will favor products that offer the most in terms of quality, performance, or innovative features.

(C) Marketing Concept - (I) Customer Needs: The marketing concept is centered around identifying and fulfilling the needs and wants of customers. It emphasizes understanding customer needs and delivering products or services that satisfy those needs more effectively than competitors.

(D) Selling Concept - (II) Existing Product and Promotion: The selling concept revolves around the idea that consumers will not buy enough of the organization's products unless a significant promotional and selling effort is undertaken. It focuses on aggressive promotion and selling techniques to stimulate more purchasing.