Question 4 (20 POINTS):Analyze how messages and mailboxes are represented in the email system that you use.

4.A.) (10 POINTS): Based on your analysis, draw the classes and their associations of your email system (a class diagram similar to Figure 5.9 of the textbook). Include cardinalities (multiplicities of relationships) in your diagram.

4.B.) (10 POINTS):

Also draw the details of the object classes that might be used to represent a mailbox and an email message in this system (draw two separate class diagrams for a mailbox and an email message similar to Figure 5.10 of the textbook).