1- To define "-" operator for a new class, one needs to:

a.define __sub__() method

b.It is impossible to define such an operator for user-defined classes.

2-Is it impossible to make static variable in a Python class.

True

False

3- defsubclass()can be used to define an objectin Python that inherits its attributes and methods from a parent class?

True

False

4- What is needed to make a new object in Python?

a.define__str__() method

b.define a constructor method

c.both constructor and __str__() methods

d.None of the above.

5- n Python you can derive a class from two parent classes but not from three parent classes.

True

False