I am talking with a hospital client to elicit data requirements. I start to understand they have entities for Licensed Practical Nurses to perform basic nursing care (and draw the LPN entity), Nurse Practitioners who have advance degrees and provide advanced care (and draw the NP entity), and specialist nurses, such as Nurse Anesthetists who do specific jobs at the hospital (and draw the NA entity). Then I realize these are all special types of nurses, and then draw a common entity nurse later after realizing there are some common attributes for all nurses. This process is called Select one a. specialization b. generalization c. completeness constraint d. conceptual modeling