I would say the answer is C, which I would guess is A novel is always a classic, because your word is unfinished. Because a is true, a novel CAN instruct or entertain. B is also true, novel's are usually fiction so it would make sense, but they are plenty of novels that are not classics, so I would say *C* is your answer.
Hope this helps!! Have a wonderful day!
(brainliest is always appreciated)
