D Question 4 1 pts [Zappy] Zappy Electronics manufactures audio components such as speakers, turntables, and AV receivers. Zappy has worked hard to build a dominant position in the AV receiver market with a 70% market share. As they expanded their hold on the category, they sold more and more units. They noticed that for each additional thousand receivers they sold, their unit cost of production decreased by 20%. This allowed them to price their receivers lower than those of comparable competitors, further ensuring their dominance. Zappy's observation directly reflects which of the following marketing concepts? dynamic pricing price discrimination the 80/20 rule the sales response function the experience curve