8:48 40 A Explain the solution in detail please because I do not understand this code For an initially empty queue Q, what are the sequence of operations the resulted in [1,2] contents. Select all...

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Extracted text: 8:48 40 A Explain the solution in detail please because I do not understand this code For an initially empty queue Q, what are the sequence of operations the resulted in [1,2] contents. Select all correct questions Q.enqueue(1), Q.first(), Q.dequeue(), Q.enqueue(1), Q.enqueue(2), Q.is_empty() Q.dequeue(), Q.first(), Q.dequeue(), Q.enqueue(2), Q.enqueue(2), Q.is_empty() Q.enqueue(2), Q.first(), Q.dequeue(), Q.enqueue(2), Q.dequeue(), Q.enqueue(1), Q.is_empty() Qenqueue(2), Q.first(), Q.dequeue(), Q.enqueue(1), Q.enqueue(2), Q.is_empty()