Enthuware

The question here states "Identify correct statements.".
The option "Class B will compile if, instead of final, it is made non-sealed." is considered wrong, with the explanation:
"A permitted subclass of a sealed class must be final, non-sealed, or sealed. So, final is fine for class B."

While final is perfectly fine, so is "non sealed", which makes "Class B will compile if, instead of final, it is made non-sealed." true.

Actually the option is trying to imply that final has to be removed and then made non-sealed. But you are right, it is not written correctly to imply the same unambiguously.
Fixed.
thank you for your feedback!

In your explanation, "A permitted subclass of a sealed class must be final, non-sealed, or sealed. So, final is fine for class B.
Remember that since interfaces cannot be final, a permitted subinterface of a sealed interface must be either sealed or non-sealed." In the question, it's a Class and NOT an interface. And so Class B can or cannot be extended and so there should be no need to change final to non-sealed.

Not sure what is your point.