Study the business case “Customer Segmentation” carefully. (a) Produce a short summary, explain how the customer segmentation can be achieved. (b) Using not more than 500 words, list out all the major steps in the KDD approach. In each step, describe clearly, in form of a table, (i) what is/are the objective(s) of the step. (ii) what is/are the major technique(s) or data mining algorithm(s) involved. (iii) what is/are the precaution(s) that should be taken when the techniques or algorithms are applied.