4. Given that a queue is being represented by the following circular representation in an array (front is currently 4 and back is currently 7): array component: 0 1 2 4 5 6 7 8 1 1 | 37 | 41 | 12 | 34 | 1 a. Show what this representation would like after the following sequence of operations are performed: deq(q, i); deq(q,j); enq(q, 81); enq(q, 72); enq(9, 38); deqq, k); (indicate the current position of front and back for each operation) b. What is an advantage of this implementation of a queue? c. What is a disadvantage of this implementation of a queue