In this lab, design a CRC model for the following problem, and add any extra

responsibility if necessary.

Show four CRC cards, which correspond to the following

four actors.

Four Actors: Student, Registrar, Teacher and Financial Institution

Four Use Cases:

(1) Register a course: invoked by Student and handled by Registrar

(2) Drop a course: invoked by Student and handled by Registrar

(3) Attend a course: invoked by Student and taught by Teacher

(4) Obtain student loan: invoked by Student and handled by Financial Institution

Create four CRC cards (only the front side is needed).