下面的代码片段用于在双向链表中删除一个节点。请在横线处填入（ ），使其能正确实现相应功能。
void deleteNode(DoublyListNode*& head, int value) {
DoublyListNode* current = head;
while (current != nullptr && current->val != value) {
current = current->next;
}
if (current != nullptr) {
if (current->prev != nullptr) {
____________ // 在此处填入代码
} else {
head = current->next;
}
if (current->next != nullptr) {
current->next->prev = current->prev;
}
delete current;
}
}
- A.
if (current->next != nullptr) current->next->prev = current->prev; - B.
current->prev->next = current->next; - C.
delete current->next; - D.
current->prev = current->next;