Concept:Product line pricing means setting different prices for related products that are sold in the same product line.
Explanation:A company producing warm clothing often offers different items such as jackets, sweaters, and coats.
These products belong to one clothing line but differ in material, quality, and design.
Using product line pricing, the company can charge different prices that reflect these differences.
This helps the company attract different customers and maximise revenue from the whole product range.
Therefore, product line pricing is the best pricing strategy for such a company.
Answer:D. product line pricing