The School provides different major options for its student.

For instance, the Faculty of Engineering has the School $($Department$)$ of Computer Science, Department of Electrical Engineering, and the Department of Aerospace Engineering. The students in each department have their modules, but they can have elective modules from other departments in the Faculty. The faculty has a Dean, and each department has a head of the department. In addition, each department has several lecturers, technicians, and secretaries$.$ The provided blank class diagram is a partial model for this scenario.Based on this Scenario answer questions $15$ and $16$

Question $15$: label the class diagram using the data provided in the table by showing each class name, necessary associations between classes, and multiplicities.

$[3\mathrm{.}5$ marks$]$

Question $16$: The previous class diagram has some design issues. Suppose that you added the Department class to your previous design.

A$)$ What are the classes that will be related to the Department class? $[3$ Marks$]$

B$)$ What are the associations$/$relationships that must be removed from the previous design? $[1\mathrm{.}5$ Marks$]$

C$)$ What are the associations$/$relationships that must be added to the new design? $[2$ Marks$]$