self is the required first argument of all instance methods in Python. What would be the consequence of not requiring the self argument in methods? Select one: a$.$ The method would not be able to access the instance's attributes and the method would not be able to invoke the instance's other methods. In other words, the instance would be completely inaccessible. cross out cross out b$.$ The method will be invoked on all of the existing instances of the class, not just the current instance. c$.$ The method would not be able to access the instance's other methods. It would still have access to all of the instance's attributescross out d$.$ The method would not be able to access the instance's attributes. It would still be able to invoke the instance's other methods on itself. cross out