For a product of your own choosing, pick one logical variable (e.g. age) that can be used to segment the market. Now, add a second variable (e.g., gender), so that customers have to satisfy the categories of both variables simultaneously (e.g., 18- to24-year-old women). Now add a third variable. How many possible segments can you identify from a combination of the three variables? What implication does this have for the marketing manager?