Assume the following declarations (which are used to process singly-linked lists as described in this section): class Node { public:

Assume the following declarations (which are used to process singly-linked lists as described in this section):class Node{public:int data;Node * next;};Node *p1, *p2, *p3;Assume also that the following statements have been executed:p1 = new(nothrow) Node;p2 = new(nothrow) Node;p3 = new(nothrow) Node;Tell what will be displayed by each of the following code segments or explain why an error occurs.p1 -> data = 123;p2 -> data = 456;p1 -> next= p2;p2 -> next= 0;cout << p1 -> data << " " << p1 ->next->data << endl;