A professor can teach one or more courses and a course can be taught by one and only one professor. An incomplete ER diagram for this requirement specification is shown in Figure 1. Complete this design in Question (2d) and (2e). Select a notation for location B in Figure 1. A) K B) -H c) Ot D) None of them . Course Courseld PK Professor PK Professorld ProfessorName SSN Title Number Time Slot Professorld Figure 1. Course and Professor