6. Nodes for a doubly linked list are defined to have the following structure data next rev The next instance variable stores a reference to the next node in the list, and the prev instance variable refers to the previous node in the list. Below is a list of three of these nodes, along with two reference variables, n and p, that refer to specific nodes in the list. Which of the following expressions does not refer to the third node in the list? A. p->next n->next->next p->prev>next D. p->next->prev->next E. n->next->next->prev->next 7. Consider the following recursive method Public int recurse(int a, int b) 1 if(a % b-2) return a; else return recurse(a + b, a - b); What is returned by the call recurse(7, 2)? A, 5 B. 7 C. 9 D. 14 E. 18