How do you insert an element at the beginning of the list?

A.

public void insertBegin(Node node)
{
	node.setNext(head);
	head = node;
	size++;
}

B.

public void insertBegin(Node node)
{
	head = node;
	node.setNext(head);
	size++;
}

C.

public void insertBegin(Node node)
{
	Node temp = head.getNext()
	node.setNext(temp);
	head = node;
	size++;
}

D.

public void insertBegin(Node node)
{
	Node temp = head.getNext()
	node.setNext(temp);
	node = head;
	size++;
}

Answer: Option A