8. Figure I shows the structure of a Singly linked list. (no duplicates) size : number of nodes head 29 120 node 10 element Figure I Structure of a Singly Linked List In this singly linked list, the reference variable head points to the first node, the variable size stores the number of nodes in this list and each node has an integer element and a next reference. (You do not know the current state of this list) Assume that we defined a Node class already ou can use statement below to allocate a new node named newest whose element is 100 and next is null. Node newest -new Node ("100) Please write methods to accomplish following operations. a) (5 points) Insert a new node at head. b) (5 points) Delete the first node