Please write in C++

a) Given a struct Node with members int value; and Node next; implement the linked list function below: Node * copy (Node n); The function returns a deep copy of the linked list that starts at Node n. If n is equal to nullptr then the function just returns nullptr. Use recursion. b) Explain how the function copy from Part a might be incorporated into as a LinkedList class so it could be called by the copy constructor. What would the code for the copy constructor be? Assume the LinkedList cla: has a field headptr of type Node * and no other fields