Assume you have a linked list with a reference named front that points to the first node in the list. What type of operation is being performed by the following Java method?

void op(int x) { LinkedNode newNode = new LinkedNode(x); if (front==null) { front = newNode; return; } LinkedNode cur = front; while(cur.next!=null) cur=cur.next; cur.next = newNode; }

		Insertion at the front
		Insertion at the rear
		Deletion from the rear
		Deletion from the front