Peng's is a high-end clothing store in Vancouver. At one time it used the same marketing mix for all of its customers, but it has discovered that it needs a different marketing mix to appeal to its ethnic customers. For example, Chinese customers want elaborate red dresses, and Vietnamese customers like brocaded dresses with long sleeves and Mandarin collars. Which process is Peng's using to identify its various customer groups? O a. macromarketing O b. positioning O c. market segmentation O d. perceptual mapping