Raleigh Wheels gets a lot of customer feedback in a variety of ways, and uses this feedback on an ongoing basis to help determine the features that will be incorporated into the all-steel bicycles that it is committed to producing and continually improving to meet the evolving needs and desires of its customers. This is an example of identifying and refining a market segment by using which one of the following approaches? a. Starting out with a customer-based, bottom-up approach, then confirming customer input with a managerial, top-down approach. b. An iterative process between a managerial, top-down approach and a customer-based, bottom-up approach. c. A customer-based, bottom-up customer needs assessment approach. d. A managerial, top-down ideation approach