Suppose you are given an implementation of a queue of integers. The operations that can be performed on the queue are:i. isEmpty (Q) — returns true if the queue is empty, false otherwise.ii. delete (Q) — deletes the element at the front of the queue and returns its value.iii. insert (Q, i) — inserts the integer i at the rear of the queue.Consider the following function:void f (queue Q) {int i ;if (!isEmpty(Q)) { i = delete(Q); f(Q); insert(Q, i); }}What operation is performed by the above function f ?

• A. leaves the queue q unchanged
• B. reverses the order of the elements in the queue q
• C. deletes the element at the front of the queue q and inserts it at the rear keeping the other elements in the same order
• D. empties the queue q