XCIO Help Center ? Incorrect Question 24 Consider the following code: #include using namespace std; struct ListNode { string data; ListNode *next; }; int main() { ListNode *ptr, *list; list = new ListNode; list->data = "Boston"; ptr = new ListNode; ptr->data = "New York"; ptr->next = nullptry list->next = new ListNode; list->next->data = "Houston"; list->next->next = ptr; W new code goes here Which of the following code correctly inserts "Chicago" at end of the list when added at point of insertion ptr = new ListNode; ptr->data - "Chicago"; ptr->next = nullptr: ptr ->ned = new ListNode: ptr-data = "Chicago" ptr next-gullt None of these pt new ListNode otr data colage next nullot