1. Which of the following statements sets x so that it refers to no object at all?

Group of answer choices

A. x =

B. x = ()

C. x = ""

D. x = None

2. To compute the salary of a manager, the program must first get the salary of the underlying Employee object and then add a bonus.

class Manager(Employee) : . . . def getSalary(self) : _________________________ return base + self._bonus 

Which statement correctly completes the code:

Group of answer choices

A. base = super(self.getSalary())

B. base = super().getSalary()

C. base = super().self.getSalary()

D. base = self.getSalary()

3. Given a list aco_students of Student objects and assuming there is a get_classification method that returns the classification ('FR', 'SO', 'JR', 'SR') for that student, which choice correctly creates a list of Student objects that are seniors?

Group of answer choices

A. s for s in aco_students if s.get_classification() == 'SR'

B. [ s if s.get_classification() == 'SR' for s in aco_students ]

C. [ s.get_classification() == 'SR' for s in aco_students ]

D. [ s for s in aco_students if s.get_classification() == 'SR' ]

4. Given a list aco_students of Student objects and assuming there is a get_gpa method that returns the student's gpa, which choice correctly sorts the list so that the student with the highest gpa is in the first position of the list aco_students?

Group of answer choices

A. aco_students.sort(key = lambda s: s.get_gpa(), reverse=True)

B. sorted(aco_students, key = lambda s: s.get_gpa(), reverse=True)

C. sorted(aco_students, key = lambda s: s.get_gpa())

D. aco_students.sort(key = lambda s: s.get_gpa())