Introduction to Object-oriented Analysis and Design Fall 2022 4. (10 points) Special methods and syntax sugar. Check whether or not a number is prime using the in operator. A prime number is a natural number greater than 1 and is divisible only by 1 and itself. (a) (2 points) Complete the definition of _ccontains__in class PrimeNumber. Hint: Use the helper function isprime. (b) (2 points) Now, suppose you change the method name from __contains__ to contains, as follows. class PrimeNumber: def contains (self, x) : pass Can you still make an object from class PrimeNumber? Answer Yes or No. (c) (2 points) After changing __contains_. to contains, what is the output of the following statement: print(issubclass (PrimeNumber, Container))? Answer True or False. (d) (2 points) Now, suppose class PrimeNumber inherits from the abstract base class Container, as follows. Page 7 of 12 CONT'D