Dunchen Moo, a manufacturer of dairy products, sells milk powders, flavored whipped cream, and yogurts. It markets a number of yogurts, including Dunchen All Natural, Dunchen Fruit on the Bottom, Dunchen Light & Fit, DunActive, and Dun-o-nino. The large variety of yogurts sold by the Dunchen brand is collectively an example of a _____. A. market segment B. target market C. product mix D. product line.