Why Does Using the Protected Access Modifier Compromise Encapsulation

Multiple Choice

Why does using the protected access modifier compromise encapsulation?

A) Multiple classes can set the value of an instance variable defined in another class.
B) When a class does change a protected value, there is added maintenance complexity.
C) Subclass methods that directly set the value of a protected instance variable need to be verified.
D) When high performance is essential, superclass methods can be used to change the value of protected variables.