Which is true of an instance $($member$)$ variable marked $$protected$?$a$.$ It can be read and changed by any other class.b$.$ It can be read and changed by any class which inherits from the class in which the variable is declared.c$.$ It can be read and changed only by the class in which the variable is declared.d$.$ It can be read but not changed by any other class in the same package as the class in which the variable is declared.e$.$ It can be read but not changed by any class which inherits from the class in which the variable is declared.