Consider the following C++ method, intended to insert a node into a linked list: void insert (int item) I Listnode newNode; newnode.value = item; newNode.next = head; head = \&newNode; Which of the following statements about this code are true? (Select all true statements). This code will crash because it attempts to assign a reference to a pointer. Th is code places a pointer to invalid stack memory into the linked list. This code has a memory leak. This code will crash immediately if the list is empty when a new item is inserted