(4.00 Puanlar) 2- Which of the following lines are used to fill the blank parts of the following code block for the purpose of combining two singly link list by appending list2 to list1. void combine(struct node *list1,struct node *list2) { } if( list1 != NULL && list2!= NULL) { } else { a) V, VI, VIII b) I, II, IV c) O VII, VIII, IX d) III, VI, X } if ( else printf("Either list1 or list2 is NULL "); I-list2->next == NULL II - combine(list2->next,list1->next) III - list1->next == NULL IV - list2->next = list1 -> next V - list1->next != NULL VI - list1->next = list2 VII - list2->next = list1 VIII - combine(list2->next,list1) IX-list2->next != NULL X - combine(list1->next,list2)