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, 21? (Select two answers)

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, 21? (Select two answers)

A . self.queue.append(get_Iast() + 1)
B . queue.append(self.get last () + 1)
C . self.queue.append(self.queue[+1]
D . self.queue.append(self.get last() +1)

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Answer: D