Which of the following lines of code will work flawlessly when put independently inside the add_new() method in order to make the snippet's output equal to [0,1...

Which of the following lines of code will work flawlessly when put independently inside the add_new() method in order to make the snippet's output equal to [0,1, 2]? (Choose two.)

A. self.queue.append(self.get_last() + 1) B. self.queue.append(get_last() + 1) C. self.queue.append(self.queue[-1] + 1) D. queue.append(self.get_last() + 1)