How do you insert a node at the beginning of the list?

A.

public class insertFront(int data)
{
	Node node = new Node(data, head, head.getNext());
	node.getNext().setPrev(node);
	head.setNext(node);
	size++;
}

B.

public class insertFront(int data)
{
	Node node = new Node(data, head, head);
	node.getNext().setPrev(node);
	head.setNext(node);
	size++;
}

C.

public class insertFront(int data)
{
	Node node = new Node(data, head, head.getNext());
	node.getNext().setPrev(head);
	head.setNext(node);
	size++;
}

D.

public class insertFront(int data)
{
	Node node = new Node(data, head, head.getNext());
	node.getNext().setPrev(node);
	head.setNext(node.getNext());
	size++;
}

Answer: Option A