If class C extends the Singly Linked List class, is it a Singly Linked List? Is it a List? Is it an Abstract List? Is it a Doubly Linked List? The Doubly Linked List class has elements with two...

If class C extends the Singly Linked List class, is it a Singly Linked List? Is it a List? Is it an Abstract List? Is it a Doubly Linked List?

The Doubly Linked List class has elements with two pointers, while the Singly Linked List class has elements with one pointer. Is Doubly Linked List a Singly Linked List with additional information?