You want all the clients using class A to use the same instance of class A, what should you do to achieve this goal?

apply the memento pattern to class a

apply the singleton pattern to class a

apply the memento pattern to class a

You want all the clients using class A to use the same instance of cl

1.	You want all the clients using class A to use the same instance of class A, what should you do to achieve this goal?
A.	mark class a final
B.	mark class a abstract
C.	apply the singleton pattern to class a
D.	apply the memento pattern to class a
Answer» D. apply the memento pattern to class a