this is a segment of C++ code. Draw a picture that shows the final result of the execution of the code segment. Your picture should indicate the value of every declared variable and the value of every field in every node. Noder,p,q; p = new Node(18); q = new Node(8); q.next = 9; p.next = p; r = 9; Node p, q, r; p= new Node(15); p.next = null; q= new Node(9); q.next = null; p.next = q; r= p; r.next = null