Which of the following is NOT true about the given design?

GRASP Sequence Diagram

Question $9$Select one:

a$.$

The design can be improved by applying the Controller pattern in GRASP.

b$.$

The design requires the SaleJFrame to call the makeLineItem operation on the Sale class.

c$.$

The SaleJFrame plays the Controller role in the MVC pattern.

d$.$

The Sale class is an application logic class.

e$.$

The design is easy to maintain due to the direct interaction between the SaleJFrame class and the Sale class.