QUESTION 4 We are trying to test a function called validateEmail. The purpose of the function is to take an email address as a string, and either return a tuple of the local part and domain of the meail, or raise an exception if the input is not a properly formatted emil address. For example, validateEmail('bill @microsoft.com') would return ('bill', 'microsoft.com'). Calling, however, validateEmail('bill') would raise a NotValidEmail error. What would the proper syntax be for testing that the validateEmail function returns a tuple on valid input? self.assertEqual(validateEmail("bill@microsoft.com"), ("bill", "microsoft.com")) self.assertEqual("bill", "microsoft.com"), validateEmail("bill@microsoft.com")) (local, domain) = validateEmail("bill@microsoft.com") self.assertEqual(local, "bill") self.assertEqual(domain, "microsoft.com") (local, domain) = validateEmail("bill@microsoft.com") self.assertEqual("bill", local) self.assertEqual("microsoft.com", domain)