Which statement is true when a superclass has protected instance variables?

Group of answer choices

A subclass object can assign an invalid value to the superclass$$s instance variables, thus leaving an object in an inconsistent state.

Subclass methods are more likely to be written so that they depend on the superclass$$s data implementation.

We may need to modify all the subclasses of the superclass if the superclass implementation changes.

All of the above.